RETAINER,PACKING (P/N ms28774-022) - New Surplus
P/N: ms28774-022
Category: Studs, Inserts & Fastener Hardware
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Available Inventory
| Condition | Price | Stock |
|---|---|---|
| New Surplus | $1.00 | 6 Available |
Product Description
The MS28774-022 is a PTFE packing retainer (backup ring) that prevents O-ring extrusion in aircraft hydraulic and pneumatic systems. This single-turn ring installs behind the primary seal in hydraulic actuators, supporting the O-ring under pressure cycling and temperature variations. Manufactured to Military Standard MS28774 per SAE AS8791 specifications, it maintains seal integrity in high-pressure applications.
Install per component maintenance manual requirements and verify fitment in the aircraft Illustrated Parts Catalog before assembly.
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 ms28774-022)?
The MS28774-022 is a PTFE packing retainer (backup ring) that prevents O-ring extrusion in aircraft hydraulic and pneumatic systems. This single-turn ring installs behind the primary seal in hydraulic actuators, supporting the O-ring under pressure cycling and temperature variations.
Does the ms28774-022 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 ms28774-022 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 ms28774-022.
Can I order the ms28774-022 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.