NSA8203-016

O-RING
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About this product
The NSA8203-016 is a factory-new O-ring supplied with a Manufacturer’s CofC. It is a circular elastomer seal intended to sit in a groove between two mating parts and prevent the passage of fluid or air. O-rings are the simplest and most common sealing element in aircraft systems, used to stop leaks, keep contaminants out, and maintain system pressure.
NSA8203-016 Datasheet
Lead Time: Stock
UOM: EA
Certification: MANF COFC
8130/EASA Eligible: Yes
International Shipping: Available
PRODUCT DESCRIPTION

NSA8203-016

  • OEM form-fit: Manufactured to the specified inside diameter, cross-section, and tolerance so it fits the OEM groove without modification.

  • Traceable supply: Supplied with a Manufacturer’s CofC and lot information for maintenance records and audits.

  • Low compression set: Designed to retain sealing force over time when used within its design limits.

  • Simple, reliable sealing: Provides effective static or low-motion sealing between mating parts when installed correctly.


  • Prevents hydraulic fluid leakage at actuator or cylinder rod glands during actuator overhaul.

  • Seals fuel line fittings or couplings when the AMM/ CofC lists the part for that fuel location.

  • Provides a pressure-tight seal in pneumatic valves and manifolds used in ECS/pressurization systems.

  • Keeps oil inside pump housings and gearboxes during bench tests and in-service operation.


  • How should I inspect it before installation?

Check the CofC and part number, look for cuts, nicks, flat spots, or deformation, and confirm the cross-section and ID visually match the requirement.

  • Do O-rings need lubricant for fitment?

Use only the lubricants recommended by the AMM to avoid damage and ensure correct seating.

  • What causes premature O-ring failure?

Common causes are wrong material selection, incorrect groove dimensions, twisting during installation, contamination, extrusion under pressure, or exposure to incompatible fluids.


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