The MS29512-04 is an aerospace-standard elastomer sealing ring (packing/O-ring type seal) used in aircraft hydraulic, fuel, lubrication, and pneumatic systems. It provides a tight, pressure-resistant seal between mating components such as fittings, housings, valves, and actuator assemblies.

This seal is designed for reliable performance in aviation environments where it must withstand vibration, pressure cycling, and wide temperature variation. It is typically used in both static sealing applications and light dynamic sealing points depending on system design.

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

Key features include:

MS29512-04 aerospace O-ring / packing seal
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 fittings, valves, and actuator assemblies
Standard MS aircraft sealing component
Direct replacement per MS aerospace hardware standards