RETAINER,PACKING (P/N ms28774-121) - New Surplus

The MS28774-121 is a PTFE packing retainer (backup ring) conforming to MS28774 specifications. This component prevents O-ring extrusion in hydraulic sealing glands by providing structural support behind the primary packing element. Installed in the groove behind an O-ring within aircraft hydraulic actuators and fluid system components, the retainer maintains seal integrity under pressure cycling and temperature variations.

Installation follows MS28774 gland dimensions and applicable OEM maintenance manuals to ensure proper positioning and sealing performance.

What is the RETAINER,PACKING (P/N ms28774-121)?

The MS28774-121 is a PTFE packing retainer (backup ring) conforming to MS28774 specifications. This component prevents O-ring extrusion in hydraulic sealing glands by providing structural support behind the primary packing element.

Does the ms28774-121 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 ms28774-121 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 ms28774-121.

Can I order the ms28774-121 in custom quantities?

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