The M83461/1-028 Packing is a precision elastomer O-ring–type seal manufactured to military specification M83461. It is supplied in a pack of 10 pieces and used in aerospace hydraulic, pneumatic, fuel, and lubrication systems to ensure reliable sealing under pressure.

This type of packing is designed for long service life in demanding aviation environments, maintaining elasticity and sealing performance under temperature extremes, vibration, and exposure to aviation fluids.

Its primary functions include:

Providing pressure-tight sealing in aircraft fluid and pneumatic systems
Maintaining elasticity under thermal and pressure cycling
Preventing leaks that could affect system performance or safety

Packings like the M83461/1-028 are critical small components in aircraft systems, ensuring safe and reliable operation of hydraulic and pneumatic circuits.