RETAINER,PACKING (P/N ms28774-218) - New Surplus

The MS28774-218 is a PTFE packing retainer (back-up ring) that prevents O-ring extrusion under hydraulic pressure. This single-turn, scarf-cut ring seats behind the primary seal in aircraft hydraulic component glands, supporting the O-ring and maintaining system integrity during high-pressure cycles. Installation requires strict adherence to aircraft maintenance manual specifications and MS/SAE standards for proper sizing and positioning.

Used across hydraulic systems in general and commercial aviation where seal reliability is critical.

What is the RETAINER,PACKING (P/N ms28774-218)?

The MS28774-218 is a PTFE packing retainer (back-up ring) that prevents O-ring extrusion under hydraulic pressure. This single-turn, scarf-cut ring seats behind the primary seal in aircraft hydraulic component glands, supporting the O-ring and maintaining system integrity during high-pressure cycles.

Does the ms28774-218 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 ms28774-218 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 ms28774-218.

Can I order the ms28774-218 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.