MS28775-136 - O-Ring

Part number MS28775-136 is an aerospace-grade nitrile rubber (NBR/Buna-N) O-ring manufactured to military specification standards for aircraft fuel, oil, hydraulic, and pneumatic sealing applications. This precision-molded elastomer seal is designed to provide dependable static and limited dynamic sealing performance in aerospace fluid systems exposed to petroleum-based fluids and lubricants.

Manufactured in accordance with MIL-P-25732 requirements using N1888 nitrile compound, this O-ring provides excellent resistance to aviation fuels, hydraulic oils, lubricants, and pressure system fluids while maintaining reliable compression set and sealing integrity over extended service intervals.

Markings / Packaging Information

• Part Number: MS28775-136
• Type: Nitrile (NBR/Buna-N) O-ring seal
• Specification: MIL-P-25732
• Compound: N1888
• Manufacturer: Freudenberg-NOK
• Packed By: Proponent (CAGE 59789)
• Quantity: 1 each
• Shelf Life: 15 years per AS5316
• Package Date: 05/2025
• Expiration: 4Q38

Features

• Aerospace-grade nitrile elastomer construction
• Excellent resistance to aviation fuels, oils, and hydraulic fluids
• Reliable compression sealing characteristics
• Suitable for aircraft hydraulic, pneumatic, lubrication, and fuel systems
• Designed for static and limited dynamic sealing applications
• Manufactured to military specification standards for aerospace service use