RETAINER,PACKING (P/N ms28774-125) - New Surplus
P/N: ms28774-125
Category: Studs, Inserts & Fastener Hardware
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| New Surplus | 4 Available |
Product Description
The ms28774-125 is a PTFE packing retainer (backup ring) conforming to MS28774/SAE AS8791 specifications. This scarf-cut, single-turn ring prevents O-ring extrusion in hydraulic and pneumatic system glands by providing structural support behind elastomeric seals. Installed in aircraft hydraulic components, actuators, and pneumatic cylinders where piston or rod grooves require backup protection under pressure cycling.
The retainer sits in the gland cavity per MIL-G-5514 dimensions, working in tandem with the primary O-ring seal to maintain pressure integrity across temperature and operational ranges typical in general aviation and commercial aircraft systems.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the RETAINER,PACKING (P/N ms28774-125)?
The ms28774-125 is a PTFE packing retainer (backup ring) conforming to MS28774/SAE AS8791 specifications. This scarf-cut, single-turn ring prevents O-ring extrusion in hydraulic and pneumatic system glands by providing structural support behind elastomeric seals.
Does the ms28774-125 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 ms28774-125 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 ms28774-125.
Can I order the ms28774-125 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.
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