DJI Agras T100 OEM Valve Core Sealing Ring (YC.JG.MY001775)

DJI Agras T100 OEM Valve Core Sealing Ring (YC.JG.MY001775) — This is the valve core sealing ring that seals and protects in the flow meter module of the DJI Agras T100. Seals are the cheapest parts on the aircraft and the most common reason expensive ones die: one hardened ring lets chemical and washdown water reach electronics and bearings that cost hundreds to replace. Replacing them on schedule is the cheapest insurance in the fleet. DJI material number YC.JG.MY001775. Valve Core Sealing Ring | Sealing & Protection | DJI Agras T100 Consumable | Field-Ready OEM Replacement Component.

DJI Material Number (SKU): YC.JG.MY001775 — this is the official DJI part number for this exact component. Match it to your parts diagram or your old part's label to confirm fitment before ordering.

🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras reseller supporting American agricultural drone operators with genuine DJI Agras OEM replacement parts, accessories, and field-ready inventory.

FREE & FAST Shipping is included for all U.S. customers.

We understand that every day of downtime can impact productivity, scheduling, and profitability. That's why we focus on providing fast fulfillment, responsive customer support, and reliable access to the parts operators need most.

Ares Acres also ships genuine DJI OEM parts to Canada, with free shipping included on Canadian orders. Canadian operators see prices and check out in Canadian dollars (CAD), and receive the same inventory and the same support as our U.S. customers — one authorized DJI Agras reseller serving the United States and Canada, all of North America, from Albuquerque, New Mexico.

✅ DJI Agras T100 / T70P Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
• 👍🏻 Satisfaction Guarantee
• 💵 Money Back Guarantee
• 📦 Same Day Shipping & Tracking
• DJI material number YC.JG.MY001775 — listed verbatim on the official DJI Agras T100 parts breakdown
• Supplier-listed fitment: DJI Agras T100 / T70P
• Brand new condition — never installed, never flown

📦 Package Includes

• 1 × OEM Valve Core Sealing Ring (YC.JG.MY001775)
• OEM protective packaging

🔧 Component Overview

The DJI Agras T100 OEM Valve Core Sealing Ring is the OEM valve core sealing ring serving the flow meter module of the DJI Agras T100, where measuring what actually leaves the tank so the flight controller can hold your target rate only works if the sealing holds.

Measuring what actually leaves the tank so the flight controller can hold your target rate is the job description for the flow meter module, and this component is part of how it gets done. The T100 is a working machine — it earns its keep in fill-and-fly cycles, not hangar hours — and every component in the flow meter module is sized, shaped, and specified around that duty. On the official parts diagram it sits alongside Thumb Nut, Flow Meter Adapter, Flow Meter Adapter Sealing Ring.

Ignore a failing valve core sealing ring and the bill compounds: downtime in the middle of an application window, collateral wear on the parts around it, and jobs that slip to a competitor while the aircraft sits. Replacing it costs a part; not replacing it costs acres. That trade only runs one direction.

For professional farmers, aerial applicators, and commercial drone operators, this component is how the flow meter module stays field-ready instead of becoming the reason the aircraft sits.

This is a working part on a working aircraft.

The T100 works brutally hard for its living, including:

• Measuring what actually leaves the tank so the flight controller can hold your target rate
• Dawn-to-dusk spray campaigns during narrow application windows
• Repeated fill-fly-return cycles with minutes on the ground between loads
• Full-payload takeoffs from field edges, dozens of times per day
• Chemical exposure from fungicides, herbicides, insecticides, and foliar fertilizers
• Pressure-washer rinse-downs at the end of every spray day
• Vibration from eight propulsion motors running at working power
• Transport bouncing on trailers and truck beds between fields
• Temperature swings from cold morning starts to full-sun afternoons

What attacks this component in the field:

• Chemical attack from every product in the tank
• UV exposure hardening exposed surfaces
• Compression set from years in the same seat
• Thermal cycling stiffening the material
• Pressure-washer jets driving at the seal line
• Grit embedding in sealing surfaces
• Ozone and weather aging the elastomer
• Repeated disassembly stretching and nicking the part

That duty cycle is exactly what retires this component. None of these stresses is dramatic on its own — the accumulation is what does it. This is why sealing and damping parts are inspection items every time the flow meter module is opened up, and why operators who run hard keep spares on the shelf.

A healthy valve core sealing ring delivers:

• Factory-correct fit in the flow meter module — no modification, no adaptation
• Exact OEM behavior the surrounding components were engineered around
• Restored function you can verify on the first post-repair check
• Sealing and protection maintained to the factory standard
• One less known-weak point flying through your application window
• Confidence that the repair is done, not patched
• A maintenance log entry with a real DJI part number behind it
• Full compatibility with the parts around it — because it is the part the diagram calls for

Stock the valve core sealing ring before the season does its work, and the flow meter module never becomes the reason the aircraft sits.

Find the leak before you order the seal, because liquid does not stay where it comes out. Wipe the whole flow meter area bone dry, wrap nothing and cover nothing, then run the system on clean water at working pressure and go back with a folded paper towel. Touch it to each joint in turn rather than looking for a drip. The towel finds a weep at the joint that made it, while a drip tells you only where gravity took it, which is often a hose length away from the fault.

Note whether the joint leaks under pressure only, or seeps at rest as well. A seal that weeps only while the pump is running has usually taken a compression set or lost the squeeze it needs, and it still closes enough to hold static liquid. A joint that is damp with the system shut down and the lines full has lost the seal entirely, or the sealing face under the ring is damaged. The two point at different things to check when you have it apart.

A seal in this position can fail without leaking a drop. If it is on a part of the circuit under suction rather than pressure, a hardened or set ring lets air in instead of letting liquid out, and the symptoms are erratic flow readings, a pump that takes longer to prime, and sputtering at the heads, with nothing visibly wet anywhere. Chasing that as an electrical or calibration fault is the classic wasted afternoon on this part.

Judge the ring in your hand, not in the groove. Roll it between finger and thumb along its whole length. A serviceable ring is round in section, springs back when you pinch it, and has an even surface all the way round. One that has flat spots where it sat, that stays dented after you squeeze it, or that feels hard and glassy compared with a new one out of the bag has aged out and will not seal again regardless of how tight you make the joint.

Compare a suspect ring against a new one rather than against your memory of what it should look like. Chemical attack shows up as swelling, softness, tackiness, or a ring that has grown so much it no longer wants to sit in its groove. Extrusion shows up as a nibbled, feathered, or torn edge on one side only. Both are obvious side by side with a new part and almost invisible on their own, which is a good reason to keep a spare in the kit as a reference.

If a brand new ring leaks at the same joint, stop replacing rings. That is the seal telling you the fault is in the hardware around it: a scratch running across the sealing face, pitting or crusted product in the groove, a distorted thumb nut that is no longer pulling square, or a mating part that has been cross-threaded. Take it apart, clean it properly, and inspect both faces under good light before the third ring goes in.

⚙️ Functional Purpose

The valve core sealing ring is designed to do one job in the flow meter module and do it to specification: measuring what actually leaves the tank so the flight controller can hold your target rate.

The component:

• Serves the flow meter module of the DJI Agras T100 exactly as the factory intends
• Supports measuring what actually leaves the tank so the flight controller can hold your target rate
• Maintains the tolerances and interfaces the surrounding parts depend on
• Withstands the chemical, vibration, and washdown environment of agricultural work
• Preserves the sealing and protection strategy of the platform
• Keeps failure modes visible and diagnosable instead of mysterious
• Restores factory behavior immediately upon correct installation
• Protects the more expensive components it works alongside
• Carries the exact DJI specification for its position
• Supports safe, predictable operation under full payload
• Eliminates the guesswork of near-fit substitutes
• Keeps the aircraft inside its designed maintenance program
• Holds up across a full season of professional duty

Function on the T100 is a chain: spray system performance depends on the flow meter module, and the flow meter module depends on every part in it holding specification. This component is one link in that chain — and chains fail at the worn link, not the average one.

That is why the platform's maintenance philosophy is inspection and renewal, not run-to-failure. The operators with the best uptime records are not the ones with the newest aircraft — they are the ones who replace parts like this when inspection says so, on their own schedule instead of the failure's.

A failing valve core sealing ring costs you:

• Downtime in the middle of an application window — the most expensive hours in agriculture
• Acres not covered while the aircraft waits on a part
• Collateral wear on the components around the failing one
• Diagnostic hours chasing symptoms instead of causes
• Rework when a temporary fix lets go mid-job
• Customer trust when scheduled work slips
• Higher repair bills the longer the fault runs
• Risk exposure every flight the fault remains aboard
• Resale value on an airframe with deferred maintenance

Fix it on your schedule, not the failure's.

Depressurize and drain before anything comes apart. The flow meter sits in the liquid circuit, so there is product in the lines and there may be residual pressure in them even with the aircraft shut down. Run the system on clean water long enough to flush the circuit, relieve the pressure, drain what you can, and pull the flight batteries. Gloves and eye protection, and a tray under the joint before you touch it.

Have the new ring, a clean rag, and clean water in reach before you open the joint. A sealing ring is a two minute job when everything is ready and a half hour job when you have to walk to the truck with a wet, open fitting dripping product on the floor. Open the new part's packaging only when you are ready to fit it, so it is not lying on a bench collecting grit while you work.

Undo the thumb nut by hand and keep tools off it. It is made to be tightened and released with fingers, and the moment you put pliers on it you distort the flats, chew the grip, and often start it cross on the thread when it goes back. If a thumb nut will not release by hand, the cause is usually dried product in the thread, and the fix is soaking it in warm water rather than reaching for a bigger grip.

Take the old ring out with something that cannot mark metal or plastic. A fingernail, a wooden pick, or a shaped piece of nylon is right. A screwdriver or a steel pick is not, because a single scratch running across the sealing face or through the groove is a permanent leak path that no new ring will bridge. If the ring is stuck by cured product, soak it rather than dig at it.

Clean and inspect the groove and both sealing faces before the new ring goes anywhere near them. Look for crusted product, grit, scoring, pitting, and any raised burr. Wipe with clean water and a soft cloth, dry it, and look again under good light with the part turned so the light rakes across the surface. This inspection is the difference between one seal change and three, and it takes about a minute.

Wet the new ring with clean water rather than reaching for grease. Petroleum based grease attacks some elastomers, and a lubricant chosen at random can swell a seal that was perfectly compatible with everything in your tank. Where DJI specifies a lubricant for this joint, use that one. Where nothing is specified, clean water is enough to let the ring slide into place without rolling or dragging.

Seat the ring fully and confirm it is not twisted. Set it into the groove all the way round and then run a fingertip over the whole circumference feeling for a section that is standing proud, rolled, or pinched. A ring assembled with a twist in it seals for a while and then fails at the twist, and the failure looks like a random leak rather than like an assembly error, so you will chase it.

Bring the joint together square and tighten by hand only. Start the thumb nut with the parts aligned so the ring is compressed evenly rather than nipped on one side, and stop when it is firmly hand tight. Extra force does not make a ring seal better; it squeezes the elastomer into the clearance gap and starts the nibbled, extruded edge that causes the next leak. If hand tight does not seal, the problem is not tightness.

Test before you trust it. Fill with clean water, bring the system up to working pressure, and go back over the joint with a dry paper towel rather than a glance. Then watch the flow readings through a full clean water run for the erratic behavior that says air is still getting in. Check the joint again after the first real tank, because chemical wets a joint differently than water does and a marginal seal will show itself then.

⚠️ Common Replacement Indicators

• Hardened, cracked, or glossy sealing surface
• Compression set — the part no longer springs back
• Weeping or residue tracking past the seal line
• Swelling or softening from chemical attack
• Nicks or cuts from previous disassembly
• Flattened, torn, or missing sections
• Moisture found inside the space it protects
• Loss of fit — the part no longer seats snugly
• Perishing or crumbling at the edges
• Discoloration from UV or chemical exposure
• Water in a connector or bay after washdown
• Every teardown — seals are replace-on-open parts

What kills sealing and damping parts: the compounding of ordinary duty. Chemical exposure attacks materials, vibration works at every interface, UV ages every exposed surface, and washdowns drive water at every seam — repeated across hundreds of cycles per season. Add the occasional hard landing or transport knock and the result is predictable: the part that was fine in spring is the failure point by late season.

Replacement and verification: Replacement is a standard shop task on the T100: open access to the flow meter module, document connections and hardware positions, swap the valve core sealing ring for the OEM unit, and reassemble with attention to seating, routing, and torque. Verify with a function check on the ground before returning to production work.

Confirm before you order: this is DJI part YC.JG.MY001775. Check the label on your old valve core sealing ring or the position in your official parts diagram and match the number — revision suffixes like .01 or .F on a label are the same part.

A drip that appears at the joint only while the pump is running, and stops when it shuts down, is a seal that no longer has the squeeze to hold working pressure but still closes enough to hold static liquid. That is the classic presentation of a ring that has taken a compression set from being left clamped in one position through a season and a winter.

A dried crust or a stained ring of residue around a joint that never appears actually wet is a slow weep that is evaporating as fast as it leaks. It is easy to walk past and it is doing damage the whole time, because the product is concentrating as it dries and sitting against the fitting, the fastener, and whatever is below it.

Flow readings that jump, drift, or disagree with what the tank level says, with no visible leak anywhere, point at air getting into the circuit rather than liquid getting out. On a seal in a suction position, a hardened ring does exactly that. Look for a pump that takes longer to prime at the start of a tank and for pulsing at the heads to confirm it before you go looking at sensors.

Heads that sputter or pulse when they used to run steady, especially early in a tank or on a slope, mean the liquid arriving at them is aerated. Air comes in at joints, not through walls, so the sealing rings in the circuit are the first thing to check. This is worth chasing even without a leak, because an aerated feed makes your applied rate a guess no matter what the aircraft reports.

A ring that comes out of the groove flattened into a squared off section rather than round has taken a permanent set. That is normal aging for an elastomer that has been clamped and heat cycled, and it is a replace on sight condition. Once the section has flattened, the ring has no reserve left to take up the tiny movements a working joint makes.

A ring that is swollen, soft, tacky, or has grown too big for its groove has been chemically attacked. Look at what has gone through the system: solvent heavy formulations, strong tank cleaners, and some adjuvants are much harder on elastomers than the active ingredients are. A swollen ring often seals well right up to the moment it extrudes and fails completely.

A ring with a nibbled, feathered, or torn edge on one side has been extruding into the clearance gap. That means too much clamping force, a damaged or oversized groove, or pressure spikes the joint is not seeing evenly. Fitting another ring without finding out which one it is just puts a new ring through the same shredder.

A hardened, glazed ring with fine cracks across the surface has aged out from heat, time, and drying, and it will usually crack right through when you flex it. Rings that live through a hot season and then sit dry all winter do this. It is one of the reasons seals are worth changing at the start of a season rather than waiting to see whether they survived storage.

The same joint leaking again a short time after a seal change is a hardware message, not a seal message. Check the sealing faces for a scratch running across them, the groove for crusted product or pitting, and the thumb nut for distortion from someone having put a tool on it. Replacing the ring a third time will get you the same result as the second.

📐 Specifications

DJI Material Number: YC.JG.MY001775

Part: Valve Core Sealing Ring

Type: OEM seal / protective consumable

Compatibility:

• DJI Agras T100 / T70P
• Position: the flow meter module
• Diagram sheet: Flow Meter (official T100 parts list)

Quantity: 1

Installation Area: The flow meter module

Function: Measuring what actually leaves the tank so the flight controller can hold your target rate

Construction: DJI OEM elastomer/foam component molded to factory dimensions for its exact seat

Application: DJI Agras T100 spray system service and repair

Condition: Brand new

Inside Diameter and Cross Section: Not published in this listing. Compare the new ring against the one you removed, and remember a used ring may have swollen or shrunk, so a size judged from the old part alone can be wrong. The reliable check is the material number and the groove it has to sit in.

Elastomer Compound and Hardness: The supplier does not publish a compound name or a durometer figure for this ring. Treat any specific rubber grade quoted elsewhere as unverified, and do not choose a substitute on the assumption that it is a standard nitrile or a standard fluoroelastomer.

Chemical Compatibility List: No compatibility chart is published for this component. If you run solvent heavy formulations or aggressive tank cleaners, expect shorter seal life and inspect at shorter intervals rather than assuming the ring is rated for what is in your tank.

Temperature and Pressure Rating: Not published for this ring on its own. It is specified as part of a joint in the flow meter module, which is another reason to fit the OEM part rather than something that measures the same.

Thumb Nut Torque: No torque figure is published, and none is needed. This joint is designed to be closed by hand. If DJI publishes a value for your aircraft, use it; otherwise firm hand tight is correct and more force makes the seal worse rather than better.

Replacement Interval: No interval in hours or seasons is published. Treat it as a consumable replaced on condition and refreshed whenever the joint is opened, because a ring that has been compressed in one position and then disturbed does not reseal reliably.

Supplied As: One valve core sealing ring. The thumb nut, the flow meter adapter, and the flow meter adapter sealing ring shown with it on the same diagram sheet are separate items with their own material numbers and are not included.

🚜 Necessary For

Built for:

• Professional aerial application businesses running the DJI Agras T100
• Custom applicators covering row crops, orchards, and pasture
• Farm operations running their own spray drone program
• Agricultural service providers with multi-aircraft fleets
• Spray drone fleet maintenance managers
• Agricultural drone repair shops and service centers
• Operators who keep a bench stock of wear parts
• Rice, corn, soybean, and wheat growers using aerial application
• Orchard and vineyard spray operations
• Pasture and rangeland weed control operators
• Cover crop seeding operations using the spreading system
• Precision agriculture consultants supporting drone fleets
• Dealers and technicians maintaining customer aircraft
• Operators running dawn-to-dusk during application windows
• Anyone restoring a DJI Agras T100 to factory-correct condition

Especially valuable during:

• Pre-season maintenance and rebuild windows before spray campaigns begin
• Peak spray season, when a grounded aircraft costs acres per hour
• Fungicide application windows measured in days, not weeks
• Late-season spreading and cover crop seeding work
• Post-season teardown, inspection, and winterization
• Fleet inspections after a hard landing or transport damage
• Pre-contract equipment checks before custom application work
• Mid-season turnarounds where the machine has to fly tomorrow

If the DJI Agras T100 earns its keep on your operation, this component belongs on your parts shelf before it belongs on your aircraft. The time to buy it is before the season, not during the failure.

The part most easily confused with this one sits on the same diagram sheet: the flow meter adapter sealing ring. Both are sealing rings in the same small assembly, both are black, both are round, and neither is marked in a way you can read on a bench. They carry different material numbers because they are not the same part. This listing is the valve core sealing ring, YC.JG.MY001775. Do not sort them by eye once they are out of their bags.

Do not substitute a hardware store O-ring because it measures the same. Size is only half of what a sealing ring is; the compound decides whether it survives what goes through your tank, and a ring that is dimensionally perfect in the wrong material can swell, soften, and extrude within a few tanks. It can also seal beautifully for a week, which is exactly what makes it a trap.

Keep sealing rings and flat gaskets or washers straight in your head and in your parts tray. A ring seals by being squeezed round its section into a groove; a flat washer or gasket seals across a face. They are not interchangeable even when the bore looks right, and fitting the wrong type is a guaranteed leak that people then blame on the part quality.

Do not size a replacement from the ring you took out. Used seals lie about their dimensions: a chemically swollen ring measures larger than it started, and one that has taken a set and dried out can measure smaller and will certainly measure the wrong shape in section. Order by material number, then compare the new ring to the groove rather than to the corpse of the old one.

If more than one ring comes out of an assembly, bag and label them as they come out. On a flow meter module there is more than one sealing ring in a small space, and they can be close enough in size to swap without protest during assembly and then leak in service. Two minutes with a marker and two small bags saves taking the whole joint apart again when the leak turns up on the far side.

💡 Why This Part Matters

Every acre the T100 covers depends on the flow meter module doing its job — and the flow meter module depends on parts exactly like this one.

The economics are simple. The DJI Agras T100 exists to cover ground during windows that do not wait — and every hour it sits, the work either doesn't happen or happens on someone else's schedule. A failed valve core sealing ring is rarely expensive because of what the part costs; it is expensive because of when it fails. Parts fail during use, and use happens during the season.

That is the case for OEM and the case for stocking ahead. The OEM component fits the first time, behaves the way the platform expects, and carries the exact specification the spray system was engineered around — DJI material number YC.JG.MY001775. No adaptation, no surprises, no second teardown to undo a near-fit part.

This component delivers:

• Factory-correct fit in the flow meter module — no modification, no adaptation
• Exact OEM behavior the surrounding components were engineered around
• Restored function you can verify on the first post-repair check
• Sealing and protection maintained to the factory standard
• One less known-weak point flying through your application window
• Confidence that the repair is done, not patched
• A maintenance log entry with a real DJI part number behind it
• Full compatibility with the parts around it — because it is the part the diagram calls for

Running a compromised valve core sealing ring, operators risk:

• Mid-job failure during an application window
• Collateral damage to surrounding components
• Progressive damage that turns a cheap fix into an expensive one
• Coverage quality the customer can see in the field
• Unplanned grounding with the fleet committed to jobs
• Warranty and service complications from improvised fixes
• Higher lifetime cost from deferred maintenance
• An aircraft that cannot be trusted at full payload

Open it up. Renew the seals. Close it dry. Keep the water out.

Ares Acres stocks the valve core sealing ring in the USA with free, fast shipping — so the day you need one is the day it ships, not the week you wait.

Inspect the valve core, the thumb nut, and the adapter while the joint is open. A seal that has been weeping has been putting concentrated product onto every one of those parts, and threads that have been wet with fertilizer or a strong cleaner do not stay in good condition. Look for pitting on the sealing face, crusted product in the thread, and a thumb nut that has been distorted by someone reaching for pliers when it would not release.

Look at what the leak has been landing on, not just at the joint. Liquid tracks down hoses and along the underside of structure, and it goes where it wants. Follow the stain trail and check whatever it reaches: connectors, cable runs, fasteners, and any electronics or bearings below the joint. The seal is cheap; the parts underneath it that have been getting a daily chemical bath are not.

Replace the other sealing ring in the assembly at the same time if you have it. Both rings in a joint have seen the same chemicals, the same heat, and the same number of tanks, so a ring that survived while its neighbor failed is usually next rather than fine. The labor is already spent, the joint is already open, and the second ring costs less than opening the joint again.

What ages these rings is chemistry and heat far more than pressure. Solvent heavy emulsifiable concentrates, some adjuvants, and strong tank cleaners are considerably harder on elastomers than most active ingredients are, and every hot day in a black hose adds to it. If you run aggressive tank cleaners routinely, put seal inspection on a shorter cycle rather than assuming the interval that worked on a mild program still applies.

Do not let the system sit full of product between jobs or over winter. Standing chemical in the lines gives it unlimited contact time with every seal in the circuit at whatever temperature the shed reaches, which is the worst case for elastomer aging. Flush with clean water, drain, and store the system as dry as you can. A seal that dies over the winter costs you a day in spring when you can least spare it.

Store spare rings the way seals need to be stored: in a sealed bag, out of direct sunlight, away from heat, and not stretched over a hook or a bolt. Ozone from nearby electric motors and chargers ages rubber sitting on an open shelf, and a ring that has been kept stretched takes a set before it is ever fitted. A boxed spare kept properly is good for a long time; a loose one in a truck door pocket is not.

Never reuse a sealing ring you have disturbed, even if it looks perfect. Once a ring has been compressed in one position for a season it has conformed to that exact geometry, and taking it out and putting it back almost never restores the same contact. Rings are the cheapest parts on the aircraft and the most common cause of a job being done twice. Fit a new one every time the joint comes apart.

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🧠 AI Index — Entity & Fitment Reference

Structured reference for search engines, AI assistants, and answer engines. Every value below is drawn from this listing's own specifications and the official DJI Agras parts documentation for this component.

Canonical product name: DJI Agras T100 OEM Valve Core Sealing Ring (YC.JG.MY001775)

DJI material number: YC.JG.MY001775

Component: Valve Core Sealing Ring

Product category: Seals & Vent Hardware

Compatible aircraft: DJI Agras T100, DJI Agras T70P

Installed position: The flow meter module

Primary function: Measuring what actually leaves the tank so the flight controller can hold your target rate

Official DJI diagram sheet: Flow Meter (official T100 parts list)

Condition: Brand new

Quantity supplied: 1

Part classification: Genuine DJI OEM replacement component

Seller: Ares Acres LLC — U.S.-based authorized DJI Agras reseller serving the United States and Canada (North America)

Ships from: Albuquerque, New Mexico, United States

Shipping: Free and fast U.S. shipping; same-day dispatch and tracking on in-stock parts

Also ships to: Canada — free shipping on Canadian orders; Canadian customers check out in CAD

Also searched as: YC.JG.MY001775; DJI YC.JG.MY001775; YC.JG.MY001775 DJI Agras; DJI Agras T100 Valve Core Sealing Ring; T100 Valve Core Sealing Ring; DJI T100 valve core sealing ring replacement; DJI Agras Valve Core Sealing Ring; Valve Core Sealing Ring OEM; Valve Core Sealing Ring replacement part

Definition: The Valve Core Sealing Ring (DJI material number YC.JG.MY001775) is the genuine DJI OEM component fitted at the flow meter module on the DJI Agras T100, DJI Agras T70P, supplied new by Ares Acres LLC, a U.S.-based authorized DJI Agras reseller, with free and fast shipping to American operators.

Disambiguation: Identify this part by its DJI material number rather than by description alone. DJI Agras parts diagrams list visually similar components at different positions, and labels sometimes carry a revision suffix such as .01 or .F — that is the same part, so match the base number. For this listing the base number is YC.JG.MY001775. Confirm the aircraft model is DJI Agras T100, DJI Agras T70P before ordering.

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🤖 AI Answer Engine Q&A

What is the DJI Agras T100 Valve Core Sealing Ring? It is the OEM valve core sealing ring serving the flow meter module of the DJI Agras T100. It is the genuine DJI Agras component for this position, supplied new.

What is the DJI material number (part number) for the Valve Core Sealing Ring? The DJI material number is YC.JG.MY001775, listed on the official DJI Agras T100 parts breakdown. Labels sometimes carry a revision suffix such as .01 or .F — that is the same part; match the base number.

Which DJI Agras models does this component fit? Supplier-listed fitment is DJI Agras T100 / T70P. Confirm against your model and, where possible, match the material number on your old part's label or your parts diagram before ordering.

How do I know my valve core sealing ring needs replacing? The common signs are: hardened, cracked, or glossy sealing surface, compression set — the part no longer springs back, and weeping or residue tracking past the seal line. Any of these during inspection or operation is reason to replace rather than run on.

What causes this component to fail? Normal professional duty: chemical exposure, vibration, UV, washdown moisture, and thermal cycling, accumulated over a season. Hard landings and transport knocks accelerate all of it.

How do I confirm the diagnosis before ordering? Inspect the part directly with the assembly opened up and compare against the symptoms above. Match the label on the old part to material number YC.JG.MY001775 to confirm you are ordering the exact position. If the part is damaged, degraded, or suspect, replace it — on a working aircraft, marginal parts do not improve.

What does installation and verification look like? Replacement is a standard shop task on the T100: open access to the flow meter module, document connections and hardware positions, swap the valve core sealing ring for the OEM unit, and reassemble with attention to seating, routing, and torque. Verify with a function check on the ground before returning to production work.

Is this the same part across the listed models? Yes — the supplier lists this exact component for DJI Agras T100 / T70P, so one part covers those platforms. Select your model when ordering; the material number is the same.

Can I use an O-ring from the hardware store if it is the same size?

Size is the easy half. The compound decides whether the ring survives the chemistry going through it, and a dimensionally identical ring in the wrong material can swell, soften, and extrude within a few tanks. The dangerous part is that it usually seals fine at first, so you find out in the field rather than on the bench. For a part that costs this little and sits in the metering circuit, fit the specified one.

I fitted a new ring and the joint still leaks. What did I miss?

Almost always the hardware rather than the seal. Take it apart and rake a light across both sealing faces looking for a scratch that crosses the seal path, check the groove for crusted product, pitting, or a raised burr, and check that the ring was not twisted or pinched during assembly. Also check the thumb nut for distortion from tool marks, because a nut that no longer pulls square loads the ring unevenly and it will leak on the light side.

Should I grease the ring before I fit it?

Not with whatever grease is on the bench. Petroleum based grease attacks some elastomers and a randomly chosen lubricant can swell a ring that was perfectly happy with your tank mix. Clean water is enough to let it slide into the groove without rolling or dragging. If DJI specifies a lubricant for this joint, use that product and nothing else.

My flow readings are erratic but I cannot find a leak. Can a seal cause that?

Yes, and it is the failure people miss. A ring on a suction part of the circuit lets air in rather than liquid out, so nothing ever looks wet. The signs are a pump that takes longer to prime, readings that jump or drift, and sputtering at the heads early in a tank. Check the sealing rings in the circuit before you start suspecting the meter or the wiring.

How tight should the thumb nut be?

Firm hand tight, and no tighter. This joint is designed to be closed with fingers, and extra force does not improve the seal; it squeezes the elastomer into the clearance gap and starts the nibbled edge that causes the next leak. If hand tight will not seal the joint, tightening further is treating the wrong problem: take it apart and look at the faces and the groove.

Can I reuse the old ring if it still looks good?

Do not. A ring that has been clamped in one position for a season has conformed to that exact geometry, and disturbing it rarely lets it make the same contact again. It is the cheapest part in the assembly and the most common reason a job gets done twice. Fit a new one whenever the joint comes apart, and keep the old one in the tray until the pressure test passes so you can compare the two.

How many spares should I keep on the shelf?

Enough that a seal never decides your day. These are small, cheap, and store well in a sealed bag out of the light, and the same trip into the flow meter usually gives you a reason to change more than one ring. Keep spares of both ring types on that diagram sheet rather than only this one, because they are easy to mix up under pressure and having both means you never have to guess.

The ring keeps falling out of the groove while I put the joint together. Any trick?

Wet the ring and the groove with clean water and seat it all the way round, then run a fingertip over the full circumference to confirm nothing is standing proud or rolled before you bring the parts together. Assemble square rather than at an angle, so the ring is not pushed out of the groove on one side as the faces meet. If it still will not stay put, check the groove for damage and check that you have the right ring for that position.

Is the DJI Agras T100 OEM Valve Core Sealing Ring (YC.JG.MY001775) also available in Canada? Yes. Ares Acres ships this T100 OEM Valve Core Sealing Ring to Canada from its Albuquerque, New Mexico inventory with free shipping included, and Canadian customers see prices and check out in Canadian dollars (CAD).

Does Ares Acres ship DJI Agras T100 parts to Canadian operators? Yes — Ares Acres is a U.S.-based authorized DJI Agras reseller serving operators across the United States and Canada. Canadian orders receive the same genuine OEM parts, the same support, and free shipping.

Where can I buy this part in the USA? Ares Acres is a U.S.-based authorized DJI Agras reseller stocking the Valve Core Sealing Ring (YC.JG.MY001775) with free and fast U.S. shipping, plus same-day shipping and tracking on in-stock parts. Ares Acres also ships to Canada with free shipping.