RETAINER (P/N MS9058-4 (QTY 50)) - New Surplus

Part number MS9058-4 is a Military Standard packing retainer (back‑up ring) that supports an O‑ring in high‑pressure aerospace service, reducing extrusion and maintaining seal integrity in tube fitting glands (QTY 50). Used in aircraft hydraulic line connections; install adjacent to the O‑ring per MS9058 dash sizing and your aircraft maintenance manual to ensure proper gland fill and orientation.

What is the RETAINER (P/N MS9058-4 (QTY 50))?

Part number MS9058-4 is a Military Standard packing retainer (back‑up ring) that supports an O‑ring in high‑pressure aerospace service, reducing extrusion and maintaining seal integrity in tube fitting glands (QTY 50). Used in aircraft hydraulic line connections; install adjacent to the O‑ring per MS9058 dash sizing and your aircraft maintenance manual to ensure proper gland fill and orientation.

Does the MS9058-4 (QTY 50) meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The RETAINER 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 MS9058-4 (QTY 50) 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 MS9058-4 (QTY 50).

Can I order the MS9058-4 (QTY 50) in custom quantities?

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