RETAINER,PACKING (P/N ms28774-211) - New, New Surplus

The MS28774-211 is a PTFE packing retainer (backup ring) designed to prevent O-ring extrusion in pressurized aircraft hydraulic components. This scarf-cut, single-turn construction provides reliable static sealing performance by supporting the O-ring against pressure forces in the gland cavity. Conforms to MS28774 and SAE AS8791 specifications for aviation seal assemblies.

Install in the component gland per manufacturer guidance, ensuring correct size selection and proper orientation for effective backup support.

What is the RETAINER,PACKING (P/N ms28774-211)?

The MS28774-211 is a PTFE packing retainer (backup ring) designed to prevent O-ring extrusion in pressurized aircraft hydraulic components. This scarf-cut, single-turn construction provides reliable static sealing performance by supporting the O-ring against pressure forces in the gland cavity.

Does the ms28774-211 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The RETAINER,PACKING conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.

What material is the ms28774-211 manufactured from?

Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the ms28774-211.

Can I order the ms28774-211 in custom quantities?

Yes, we sell hardware in various quantities from single units to bulk lots. The RETAINER,PACKING is available in: New, New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.