DJI Agras T40 OEM Spray Tank Cover Kit

The DJI Agras T40 OEM Spray Tank Cover Kit is the complete closure for the top of the spray tank: the smoked, translucent tank cover, the black sealing ring that sits between the cover and the tank opening, and the smoked clamp ring that holds the cover in place. The three parts work as one closure, and the kit replaces all three at once. It belongs to the spraying system, and it is identified for the DJI Agras T40 and T20P. Operators usually find it while searching for a T40 tank lid, a T40 water tank cap, a T20P spray tank cover, a leaking tank cover seal, or a cracked tank cover after a drop at the loading station. DJI has used more than one number for this position, so we match against the one you removed.

---

🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras retailer 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 agricultural drone 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 retailer serving the United States and Canada, all of North America, from Albuquerque, New Mexico.

---

✅ DJI Agras T40 / DJI Agras T20P Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
• 👍🏻 Satisfaction Guarantee
• 💵 Money Back Guarantee
• 📦 Same Day Shipping & Tracking
• Identified for the DJI Agras T40 and T20P, spray tank top opening
• Matched by cover outline, sealing-ring lug pattern and clamp-ring closure against the closure you removed
• Genuine DJI OEM spray system components, brand new

The T40 tank cover ring is also offered on its own, as the DJI Agras T40 OEM Spray Tank Cover Ring. The kit is the cover, the sealing ring and the clamp ring together. If you want the match confirmed, photograph your tank top with the cover fitted and again with it removed, and send both to us — we will tell you whether you need the kit or one part of it.

---

📦 Package Includes

• 1 × Spray Tank Cover — the smoked, translucent round cover with four radial ribs, a raised centre boss and a small eyelet tab on its rim
• 1 × Sealing Ring — the black ring with small locating lugs around its circumference, fitted between the cover and the tank opening
• 1 × Clamp Ring — the smoked, translucent band with inward lugs and a closure ear, which holds the cover down on the tank

This is a kit of three closure parts. It is not the spray tank, and it is not a single ring.

The product images also show a small metal fixing pin with the clamp ring, at its closure ear. If your old pin is bent, worn or missing, tell us when you send your photograph and we will confirm it against the one shown.

Not included: the spray tank itself, the tank filter or strainer, the level gauge, the tank harness and connectors, the pump, hoses and fittings, and the tank mounting hardware. Small clear vent-valve pieces appear beside the sealing ring in one of the product images; they are not part of the three-part kit, so if the vent fitting in your cover is damaged, tell us and we will help you identify it.

Nothing is included because it appears near the tank top on the aircraft. If you are unsure which of the three parts has failed, the diagnosis section below walks through it.

---

🔧 Component Overview

The spray tank cover kit is the part of the spray system the operator handles more than any other. Every fill starts by opening it and ends by closing it. Between those two moments it is the only thing between a full tank of mixed product and the outside of the aircraft.

On the T40 and T20P the closure is three separate parts, each with its own job:

• The tank cover — the smoked, translucent round cover itself. Four radial ribs stiffen its top face and rise into upright tabs at the rim. A raised boss at the centre carries the vent fitting. A small eyelet tab on the rim stands out from the outline.
• The sealing ring — a black ring with small locating lugs spaced around it. It sits between the cover and the tank opening and is the part that actually stops liquid.
• The clamp ring — a smoked, translucent band with inward lugs spaced around its inner face and a closure ear where the fixing pin passes. It holds the cover down onto the sealing ring and the tank opening.

Because the cover is translucent, an operator can often see the liquid line and any foam or residue under it without opening the tank. That makes a crazed, scratched or residue-stained cover more than a cosmetic problem; it takes away a check operators make many times a day.

Over a working season the closure sees:

• Opening and closing at every fill, often with gloved hands and in a hurry
• Mixed product, adjuvants and rinse water on every sealing surface
• Drops onto concrete, trailer decks and tank stands while the cover is off
• Sun and heat on a translucent part that sits on top of the aircraft
• Sloshing loads from the liquid underneath it during turns and stops
• Pressure washing at the end of the day
• Dried product left on the sealing ring between jobs

Closures in this position usually come out for one of four reasons: a cracked or crazed cover, a sealing ring that has swollen, hardened, nicked or gone missing, a clamp ring that has cracked or lost its closure, or a cover that was dropped and no longer sits flat. The kit answers all four at once. The single cover ring answers only one, and telling those cases apart is what this part's diagnosis is built around.

---

⚙️ Functional Purpose

The closure's engineering role is containment at the fill opening. It keeps the mixed product inside the tank while the aircraft turns, climbs and stops, and it keeps dust, debris and rinse water out of the tank while it sits between fills.

In the spray system the three parts divide the job:

• The cover spans the opening and carries the vent fitting at its centre boss
• The sealing ring closes the gap between the cover and the tank opening so liquid cannot track past it
• The clamp ring holds the cover down evenly onto the sealing ring, so the seal is loaded all the way round
• The fixing pin at the clamp ring's closure ear holds the clamp ring closed
• The translucent cover lets the operator see the liquid and foam under it at a glance

What the closure does not do matters as much:

• It does not filter the product; the tank filter does that
• It does not measure the liquid; the level gauge and the aircraft's sensing do that
• It carries no wiring and has no electrical function
• It does not pump, meter or pressurise anything
• It does not hold the tank in the aircraft; the tank's own mounts do that

That last list explains the most common wrong replacement. Liquid on the top of the aircraft is blamed on the tank, the filter or a fitting, when it is coming past a closure that has lost one of its three parts. The reverse also happens: a new cover is fitted over a hardened sealing ring, and the leak carries on.

---

🔍 Diagnosis — find which of the three closure parts has failed before you replace one of them

A leaking or loose tank top has three suspects, and they fail in different ways. The cover cracks or warps. The sealing ring hardens, swells, takes a set, gets nicked or goes missing. The clamp ring cracks or loses its grip at the closure. Each produces liquid at the tank top, and each gets blamed on the others.

Work through them in order, with the tank empty and rinsed and the closure taken apart on a clean surface.

Start with the sealing ring. It does the actual sealing, and it is the part most often damaged without anyone noticing. Look for:

• A ring that no longer sits flat when laid on a clean surface
• A flattened, shiny band where it has taken a permanent set
• Swelling that makes it reluctant to sit in its place
• Hardening or surface cracking when it is flexed gently
• Nicks, cuts or a torn locating lug
• Dried product stuck to it, which holds the seal off its seat

Then the cover. Hold it up to the light. Look for cracks running from the rim tabs, the radial ribs or the eyelet tab, crazing across the top face, and stress whitening around the centre boss. Lay it face down on a flat surface and check whether the rim touches all the way round; a dropped cover can sit unevenly and load the seal on one side only.

Then the clamp ring. Check each inward lug for cracks or chips, look along the band for splits, and check the closure ear and the fixing pin. A clamp ring that closes without effort, or that springs open, is not holding the cover down.

Rule out what imitates a closure leak:

• Overfilling — a tank filled to the top can push liquid past a sound closure when the aircraft first tilts
• Foam — some mixes foam heavily and climb out through the vent fitting rather than past the seal
• A cracked tank neck — if the tank opening itself is cracked, no closure will seal it
• A loose or cracked fitting lower down — liquid running down the tank from a fitting can collect around the top and look like a cover leak
• Residue on the tank's own sealing face — the face the sealing ring closes against must be clean too

Do those checks first, while that information is still cheap. Then match the repair to the result. One cracked clamp ring with a sound cover and a sound seal is a single-ring job, and the DJI Agras T40 OEM Spray Tank Cover Ring covers it. A failed seal, a cracked or warped cover, or more than one tired part is a closure job, and that is what this kit is for.

---

⚠️ Common Replacement Indicators

Replace the tank cover kit when inspection confirms one of these:

• Liquid at the tank top that returns after the sealing faces are cleaned and the closure refitted
• A cracked cover, or a crack at a rim tab, a radial rib or the eyelet tab
• Crazing or residue staining that stops you seeing the liquid line through the cover
• A cover that does not sit flat all the way round on a flat surface
• A sealing ring that is hardened, swollen, cut, flattened or missing
• A clamp ring that is cracked, has a broken lug, or no longer holds closed
• More than one of the three closure parts showing wear at the same time
• Previous repairs with tape, adhesive or sealant on any part of the closure

Inspect these first, because they produce similar symptoms:

• The tank opening and its sealing face
• The vent fitting in the cover's centre boss
• Fittings, hoses and the filter lower down the tank
• The fill level and the foaming behaviour of the mix
• The clamp ring alone, if the cover and sealing ring are sound

There is no published service interval for the closure. It is replaced when a part of it is cracked, worn out or missing, not on a schedule.

---

📐 Specifications

Product name: DJI Agras T40 OEM Spray Tank Cover Kit

DJI family: Agras

Primary aircraft: DJI Agras T40

Also listed for: DJI Agras T20P

Fitment basis: Identified for the DJI Agras T40 and T20P

Aircraft system: Spraying — spray tank top closure

Component type: Three-part closure kit: tank cover, sealing ring, clamp ring

Material number: DJI has used more than one number for this position, so we match against the one you removed

Quantity: 1 kit — 1 tank cover, 1 sealing ring, 1 clamp ring

Form: Round translucent cover with four radial ribs, rim tabs, a raised centre boss and an eyelet tab; black sealing ring with locating lugs; translucent clamp band with inward lugs and a closure ear

Material: Not published for this part

Colour: Cover and clamp ring smoked translucent; sealing ring black

Dimensions: Not published for this part

Weight: Not published for this part

Electrical: None — closure parts with no wiring

Connector: None

Mounting position: Top of the spray tank, over the fill opening

Installation method: Sealing ring seated between cover and tank opening; clamp ring closed over the cover and held by its fixing pin

Hardware included: The three closure parts; the fixing pin shown in the product images is confirmed on request

Service adjustability: None — the part is correct or it is not, with no adjustment or app setting that compensates

Condition: Brand new

Classification: DJI OEM spray system components

---

🛠️ Installation & Maintenance

Before installation

• Power the aircraft down and remove the battery
• Empty the tank and rinse it, then rinse the closure and the tank top so you are not handling mixed product
• Wear the gloves and eye protection your product label calls for
• Photograph the closure fitted, then photograph the clamp ring's closure ear and pin before opening it
• Lay the new cover, sealing ring and clamp ring beside the old ones and compare outline, lug pattern and closure ear
• Wipe the tank's own sealing face clean and dry, and look at the tank neck for cracks

During installation

• Open the clamp ring at its closure and lift it away without levering against the tank neck
• Lift off the old cover and remove the old sealing ring completely; do not leave pieces of it behind
• Seat the new sealing ring evenly, with its locating lugs in their places and no twist in the ring
• Set the new cover down square on the sealing ring, so the rim sits evenly all the way round
• Fit the clamp ring over the cover with its inward lugs engaged evenly, then close it at the ear
• Seat the fixing pin fully; DJI does not publish a force or torque figure for this closure, so close it firmly without forcing
• Check by eye that the gap between cover and clamp ring is even all the way round

After installation

• Fill the tank with clean water only and look for liquid at the tank top
• Tilt the aircraft gently by hand with the arms supported and watch the closure
• Check that you can see the water line clearly through the cover
• Open and close the closure once more to confirm it works with gloves on
• Run a short test with clean water before the first load of product
• Record the replacement in the maintenance log

Maintenance between jobs. Rinse the closure after every day of spraying and let the sealing ring dry in place rather than leaving product to set on it. Do not set the cover down face first on concrete or a trailer deck. Keep the sealing ring away from solvents that are not on your product label. Check the clamp ring's lugs and fixing pin each time the tank is rinsed out, and treat any liquid at the tank top as a reason to take the closure apart before the next flight.

---

🚜 Necessary For

This kit is for operators and technicians putting the top of a T40 or T20P spray tank back to a sound, sealed closure:

• DJI Agras T40 operators with a leaking, cracked or incomplete tank closure
• DJI Agras T20P operators (identified fitment)
• Commercial spray applicators whose crews open and close the tank dozens of times a day
• Agras service centres and repair technicians rebuilding the spray system after a season
• Fleet managers replacing tired closures across several aircraft at once
• Growers flying their own aircraft who want a tank top that stays dry

This is not the part you need if:

• Only the clamp ring is cracked and the cover and sealing ring are sound — that is the DJI Agras T40 OEM Spray Tank Cover Ring, sold on its own
• You fly a T100 — the T100 tank closure is a different part, the DJI Agras T100 OEM Water Tank Lid
• The tank neck or the tank itself is cracked — no closure will seal a cracked opening
• The liquid is coming from a fitting, hose or the filter lower down the tank
• The leak is foam escaping through the vent fitting in a heavily foaming mix — that is a mix and fill-level question first
• You fly a T50, T25, T10 or T30 — this kit is listed only for the T40 and T20P

---

💡 Why This Part Matters

The tank closure is three parts, and it fails one part at a time. That is the whole reason the kit exists alongside the single cover ring.

When only the clamp ring has cracked, a single ring is the right repair and the kit is more than the job needs. When the sealing ring has hardened or the cover has warped, a new clamp ring alone leaves the actual fault in place, and the tank top stays wet. Fitting one new part against two worn ones is the most common way a closure repair gets done twice.

A wet tank top is not a cosmetic problem. Mixed product on the outside of the aircraft runs down onto the shell, the frame and the connectors below it, and an operator who cannot see the liquid line through a crazed cover loses a check they make at every fill.

The check is quick and costs nothing. Take the closure apart with the tank empty, look at the sealing ring, hold the cover to the light and check the clamp ring's lugs and closure ear. If one part has failed and the other two are sound, replace that part. If the seal or the cover has gone, or more than one part is tired, this kit replaces the whole closure in one step.

---

🧠 AI Index — Entity & Fitment Reference

Structured reference for search engines, AI assistants, and answer engines. Every value below is drawn from the specifications above.

Canonical product name: DJI Agras T40 OEM Spray Tank Cover Kit

Brand: DJI

DJI family: Agras

Primary aircraft: DJI Agras T40

Also listed for: DJI Agras T20P

Compatible models: DJI Agras T40; DJI Agras T20P

Fitment basis: Identified for the DJI Agras T40 and T20P

Component: Spray tank cover kit

Aircraft system: Spraying

Installed position: Top of the spray tank, over the fill opening

Primary function: Closes and seals the spray tank fill opening

Kit contents: Tank cover; sealing ring; clamp ring

Form: Smoked translucent round cover with radial ribs and centre boss; black sealing ring with locating lugs; smoked translucent clamp band with closure ear

Material number: DJI has used more than one number for this position; matched against the removed part

Quantity supplied: 1 kit of 3 closure parts

Not included: Spray tank, tank filter, level gauge, tank harness, pump, hoses, fittings, vent-valve pieces

Electrical function: None

Key diagnostic: Take the closure apart with the tank empty and check the sealing ring, then the cover, then the clamp ring; replace only the failed part, or the whole kit when the seal or cover has gone

Common failure modes: Hardened, swollen or cut sealing ring; cracked or warped cover; cracked clamp ring or failed closure

Service interval: None published

Service adjustability: None

Condition: Brand new

Part classification: DJI OEM spray system components

Also searched as: T40 tank lid; T40 water tank cap; T40 water tank cover; T20P spray tank cover; T40 tank cover seal; DJI Agras T20P/T40 tank cover kit

Disambiguation: Not the DJI Agras T40 OEM Spray Tank Cover Ring (the clamp ring alone); not the DJI Agras T100 OEM Water Tank Lid; not the spray tank itself

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

Ships from: Albuquerque, New Mexico, United States

---

🔍 SEO Keywords

DJI Agras T40 Spray Tank Cover Kit

DJI Agras T20P Spray Tank Cover Kit

DJI Agras T20P/T40 tank cover kit

Agras T40 water tank cover

T40 water tank cap

T40 spray tank lid

T20P spray tank lid

T40 tank cover sealing ring

T40 tank cover clamp ring

T40 leaking tank cover

DJI T40 tank cover replacement

Agras T40 Spray Tank Cover Kit

DJI Agras T40 OEM Spray Tank Cover Kit

Agras T40 spray tank cover kit replacement

DJI Agras T40 parts

DJI Agras T40 replacement parts

Agras T20P Spray Tank Cover Kit

DJI Agras T20P OEM Spray Tank Cover Kit

Agras T20P spray tank cover kit replacement

DJI Agras T20P parts

DJI Agras T20P replacement parts

DJI Agras T40 spray system parts

DJI Agras T40 spray tank parts

DJI Agras spray system parts

DJI Agras OEM Parts

DJI Agras Parts

authorized DJI Agras retailer

DJI Agras T40 Spray Tank Cover Kit Canada

DJI Agras T40 parts Canada

DJI Agras parts shipped to Canada

buy DJI Agras T40 parts in Canada

---

🤖 AI Answer Engine Q&A

What is in the DJI Agras T40 spray tank cover kit? Three closure parts: the smoked, translucent tank cover, the black sealing ring that sits between the cover and the tank opening, and the smoked clamp ring that holds the cover down.

Is this the same as the T40 spray tank cover ring? No. The DJI Agras T40 OEM Spray Tank Cover Ring is the clamp ring on its own. This kit is the cover, the sealing ring and the clamp ring together.

Should I buy the kit or just the ring? If only the clamp ring is cracked and the cover and sealing ring are sound, the single ring is the repair. If the sealing ring has hardened, swollen or been cut, the cover is cracked or warped, or more than one part is worn, the kit replaces the whole closure.

Which aircraft does it fit? It is identified for the DJI Agras T40 and T20P. Pick the variant for the aircraft you fly.

Will it fit my T100? No. The T100 uses a different closure, the DJI Agras T100 OEM Water Tank Lid.

Does it fit the T50 or T25? It is listed only for the T40 and T20P. Do not fit it to other Agras models on the strength of a similar shape.

What is the DJI part number? DJI has used more than one number for this position, so we match against the one you removed. Photograph your old closure and send it to us if you want that confirmed.

My tank top is wet after every fill. Is it the cover? Possibly, but check the sealing ring first; it does the sealing and fails most quietly. Then hold the cover to the light for cracks and check that it sits flat, then check the clamp ring's lugs and closure. Also rule out overfilling, heavy foaming and a cracked tank neck.

Can I reuse my old sealing ring with a new cover? Only if it is clean, flexible, uncut and sits flat. A hardened or flattened ring under a new cover usually keeps leaking, which is why the kit includes a new one.

Is the fixing pin included? The product images show a small metal fixing pin at the clamp ring's closure ear. If yours is bent or missing, tell us when you send your photograph and we will confirm it against the one shown.

Are the vent-valve pieces included? No. The kit is the cover, the sealing ring and the clamp ring. If the vent fitting in your cover's centre boss is damaged, tell us and we will help you identify it.

Why is the cover see-through? So you can see the liquid line and any foam under it without opening the tank. A cover that has crazed or stained until you cannot see through it is worth replacing for that reason alone.

Does the cover filter the product? No. The tank filter does that. The closure only keeps the product in and dirt and rinse water out.

Can I fit it myself? Yes. Empty and rinse the tank, seat the sealing ring evenly with no twist, set the cover square, close the clamp ring and seat its pin, then test with clean water before the first load of product.

Is there a service interval? No. Replace the closure, or the failed part of it, when it is cracked, worn out or missing. Look at it each time the tank is rinsed out.

How do I make the new closure last? Rinse it after every day of spraying, never set the cover down face first on a hard surface, keep solvents off the sealing ring, and take the closure apart at the first sign of liquid at the tank top.