Spray Tank Cap 2-Piece Set | Tank Sealing Caps | Fill Port Closure Hardware | Tank Access Sealing Components | Field-Ready OEM Replacement Components
🇺🇸 U.S.A. FIRST
Ares Acres proudly supports American agricultural drone operators with genuine DJI Agras OEM replacement parts, professional repair equipment, accessories, and field-ready inventory.
FREE & FAST Shipping is included for all U.S. customers.
The tank cap is the most-handled part of the entire spray system — opened and closed at every single fill, dozens of times a day at working tempo, with gloved hands, in a hurry, all season long. No other sealing component on the aircraft cycles that often.
And no other seal failure is as visible: a cap that no longer seals lets chemical slosh and splash from a loaded tank in flight — onto the airframe, onto the field, out of the application budget. A worn cap turns every takeoff with a full tank into a slow leak the operator pays for by the acre.
That is why Ares Acres keeps hard-to-find OEM tank hardware in stock and shipped fast to the U.S.A. — as a pair, so one goes on the tank and one goes in the field kit — helping operators keep every fill sealed, minimize downtime, and keep their aircraft spraying when every acre counts.
For professional farmers, aerial applicators, and commercial drone operators, a fresh tank cap is the simplest chemical savings on the aircraft.
✅ DJI Agras T50 / T40 Compatibility Guarantee
- 🇺🇸 USA Compatibility Guarantee
- 👍🏻 Satisfaction Guarantee
- 💵 Money Back Guarantee
- 📦 Same Day Shipping & Tracking
📦 Package Includes
- 2 × DJI T50 / T40 Spray Tank Caps
- Premium OEM tank sealing hardware
- Direct-fit replacement components
- Protective packaging
🔧 Component Overview
The DJI T50 - T40 Original Spray Tank Cap (2 Caps) set provides the tank sealing caps for the spray systems of the DJI Agras T50 and T40 agricultural drones.
Each cap seals the spray tank securely — preventing leaks, containing sloshing chemical in flight, and keeping the liquid delivery system closed and efficient through plant protection operations. Crafted from durable materials engineered for harsh agricultural conditions, a fresh cap restores a factory seal the moment a worn one comes off. And because the set ships as a pair, one seals the tank while the spare rides in the kit.
Commercial agricultural drones operate in demanding environments every day, including:
- Crop spraying
- Liquid fertilizer application
- Herbicide and pesticide application
- High-tempo fill-and-fly operations
- Orchard operations
- Vineyard spraying
- Precision agriculture missions
- Daily commercial deployments
- Fleet operations
- High-acreage contract work
Throughout these operations, spray tank caps are routinely exposed to:
- Dozens of open-close cycles every working day
- Continuous chemical contact at the seal
- Sloshing liquid loads in flight
- Over-tightening from gloved hands
- Grit and debris at the sealing face
- UV exposure across long seasons
- Heat cycling in summer conditions
- Pressure-washing and rinse cycles
- Drops and handling during field fills
- Long commercial operating hours
Over time, this duty wears threads, degrades sealing surfaces, and fatigues the cap body — and a compromised cap means a tank that leaks from the top down.
The Spray Tank Cap set helps maintain:
- A secure, leak-free tank seal
- Contained chemical through every flight
- Efficient liquid delivery at every rate
- Fast, confident tank fills
- A spare always in the field kit
- Two-model fleet coverage
- Increased fleet readiness
- Maximum aircraft uptime
- Reliable commercial operation
For operators flying loaded tanks over customer fields, seal integrity is non-negotiable.
⚙️ Functional Purpose
The Spray Tank Caps are designed to seal the spray tanks of the DJI Agras T50 and T40.
The components help:
- Seal the tank fill port securely
- Prevent leaks and splash-out in flight
- Contain sloshing loads during maneuvers
- Maintain efficient liquid delivery
- Keep contaminants out of the tank
- Support fast open-close fill cycles
- Replace worn, cracked, or leaking caps
- Restore factory tank sealing
- Keep a spare cap in every field kit
- Install hand-tight with zero tools
- Maintain correct fitment across both models
- Support preventative maintenance
- Keep tank hardware field-ready
Every fill of every mission ends with this cap going on — and the tank is only as sealed as the cap closing it.
Sound tank caps keep chemical in the tank and out of the airstream through season after season of daily fills.
Worn or damaged tank caps may contribute to:
- Leaks and splash-out from the fill port
- Chemical waste on every flight
- Residue streaking the airframe
- Contaminants entering the tank
- Caps seizing or cross-threading
- Slow, fumbling fill cycles
- Interrupted spraying missions
- Unexpected downtime
- Reduced fleet reliability
Replacing worn caps restores the sealed tank the spray system was engineered around.
⚠️ Common Replacement Indicators
Replacement may be recommended when operators observe:
- Leaking or weeping at the tank cap
- Chemical residue streaking below the fill port
- Worn or cross-threaded cap threads
- Degraded or hardened sealing surfaces
- Cracked or deformed cap bodies
- Caps that no longer tighten firmly
- Caps that seize and fight removal
- UV-aged, brittle plastic
- Lost caps needing spares
- High-cycle tank hardware
- Maintenance inspection findings
- Spray system rebuild projects
- Fleet refurbishment projects
- Preventative pre-season replacement
Common causes of cap wear include thread wear from thousands of fill cycles, chemical attack degrading the sealing face, over-tightening stress from hurried gloved hands, UV embrittling the cap body season after season, and grit grinding into the threads at field-side fills — the most-cycled seal on the aircraft wears the fastest, so experienced crews check cap seal at every fill routine and swap at the first weep.
For commercial operators, a two-cap set is almost always cheaper than the chemical a leaking fill port splashes away.
📐 Specifications
Component Type: Spray tank caps / tank sealing hardware
Compatibility:
- DJI Agras T50
- DJI Agras T40
Package Quantity: 2 Caps
Installation Area: Spray tank fill port
Function: Seals the tank against leaks and contamination
Design: Hand-tight sealing cap, tool-free service
Construction: Durable materials for chemical and UV duty
Mounting Type: Direct-fit OEM replacement components
Application: Agricultural drone spray system maintenance
🚜 Necessary For
This component is ideal for:
- DJI Agras T50 operators
- DJI Agras T40 operators
- Farmers operating spray drones
- Commercial spraying contractors
- Agricultural aviation companies
- Fleet maintenance managers
- Agricultural drone technicians
- DJI Agras service providers
- Drone repair facilities
- Commercial drone fleets
- Precision agriculture businesses
- Spray system rebuild projects
- Preventative maintenance programs
- Daily commercial operations
- Emergency repair inventory
- Professional agricultural drone operators
Especially valuable during:
- Spring spraying season
- Summer application windows
- High-tempo fill-and-fly operations
- Spray system service work
- Multi-aircraft fleet maintenance
- Seasonal rebuilds
- Emergency repairs
- High-hour commercial operations
When the tank opens dozens of times a day, keeping fresh caps on hand keeps operations moving.
💡 Why This Part Matters
Do the math on a fill-and-fly day: a working T50 can cycle its tank dozens of times, and every cycle means the cap comes off and goes back on. Multiply across a season and the tank cap sees more service cycles than nearly any other part on the aircraft — which is exactly why it wears out first and why nobody notices until chemical starts streaking the tank.
The two-cap set is field wisdom in a package: caps get dropped in tall grass, threads strip at the worst moment, and seals give out mid-season — so one cap works while the spare waits in the truck. The crews that never lose a spray day to a thirty-second part are the ones who stocked it before they needed it.
The Spray Tank Cap set helps maintain:
- A tank seal worth flying loaded
- Chemical staying in the budget
- Clean, fast fill cycles all day
- A spare always within arm's reach
- Two-model fleet coverage
- Professional fleet standards
- Increased aircraft uptime
- Reliable commercial performance
- Long-term operational confidence
Flying a worn tank cap, operators risk:
- Chemical splashing out of a loaded tank
- Residue streaking the airframe every flight
- Contaminants riding into the liquid path
- A lost cap grounding a fill cycle
- Interrupted missions
- Unexpected downtime
- Lost spraying opportunities
- Reduced return on investment
For practical, hardworking operators, the value is simple:
Protect the seal. Protect the chemical. Protect the mission. Protect the season.
Professional DJI Agras operators understand that spray efficiency starts at the top of the tank. Keeping fresh spray tank caps on hand means every fill sealed and every drop applied where it belongs all season — and that difference is what separates a good season from a frustrating one.
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