The MS28775-136 is an aerospace-standard O-ring sealing element (packing) used in aircraft hydraulic, fuel, pneumatic, and lubrication systems. It provides a reliable pressure-tight seal between mating components such as fittings, valve housings, pumps, and actuator assemblies.

This O-ring is designed to maintain sealing integrity under vibration, pressure cycling, and wide temperature variations typical in aviation environments. It is suitable for both static sealing applications and light dynamic interfaces depending on system design.

Manufactured to MS specifications, it is typically made from FKM (Viton-type) or equivalent aerospace-grade elastomer, offering strong resistance to aviation fluids, hydraulic oils, fuels, and environmental aging.

Key features include:

MS28775-136 aerospace O-ring seal
Pack of 10 pcs
Used in hydraulic, fuel, and pneumatic systems
Provides reliable leak-proof sealing
Resistant to aviation fluids and oils
High pressure and temperature capability
Suitable for vibration and cyclic loads
FKM (Viton-type) elastomer construction
Used in valves, fittings, pumps, and actuators
Direct replacement per MS aircraft hardware standards