NSA8203-128

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About this product
The NSA8203‑128 is a precision‑molded fluorocarbon O‑ring (size AS568A‑128) designed for static and dynamic sealing in aircraft fuel, hydraulic, and pneumatic systems. Manufactured under strict quality controls and supplied with a Manufacturer’s Certificate of Conformance, it provides durable, leak‑proof performance across extreme temperatures and exposure to aggressive fluids.
NSA8203-128 Datasheet
UOM: EA
Stock Location: Dubai
Hazardous Item: Non-Hazardous Item
Lead Time: Stock
Certification: MANF COFC
8130/EASA Eligible: Yes
PRODUCT DESCRIPTION

NSA8203-128

  • Fluorocarbon Elastomer (FKM): Excellent resistance to Jet A/A‑1 fuel, Skydrol®, oils, and solvents.

  • Low Compression Set: Maintains sealing force after thousands of thermal and pressure cycles.

  • Chemical Inertness: Unaffected by aviation hydraulic fluids, fuels, and standard cleaning agents.

  • Manufacturer’s CofC: Supplied with full trace documentation for FAA/EASA compliance.


  • Provides a static seal between the body and cover on refueling service carts.

  • Seals spool‑to‑body interfaces in flight‑deck environmental control valves.

  • Maintains leak‑proof joints in gear‑bay plumbing during taxi and landing.

  • Prevents bleed‑air leaks at air‑conditioning pack connections in cabin systems.


  • Which fluids can this O‑ring handle?

It’s compatible with Jet A/A‑1 fuel, Skydrol® hydraulic fluid, MIL‑PRF‑5606 oils, and most aviation cleaners.

  • Is lubrication required during installation?

A light film of compatible fluid eases installation and prevents pinching.

  • Can this seal be used in dynamic shaft applications?

Yes, rated for low‑ to medium‑speed rotary shafts up to 500 rpm with minimal friction.


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