RETAINER,PACKING (P/N ms28774-326) - New Surplus
P/N: ms28774-326
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 | 1 Available |
Product Description
The MS28774-326 is a tetrafluoroethylene (PTFE) backup ring from the MS28774 series designed to prevent O-ring extrusion in hydraulic and pneumatic system glands. This packing retainer installs in component grooves behind seals, supporting them against pressure-induced extrusion during operation. The PTFE material provides low friction and compatibility with mineral oils, synthetic fluids, and pneumatic systems.
Installation requires orienting the scarf cut per maintenance manual specifications and applicable groove standards for MS28774 backup rings. Commonly used in actuators, pumps, motors, and fluid power components across general and commercial aviation.
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 ms28774-326)?
The MS28774-326 is a tetrafluoroethylene (PTFE) backup ring from the MS28774 series designed to prevent O-ring extrusion in hydraulic and pneumatic system glands. This packing retainer installs in component grooves behind seals, supporting them against pressure-induced extrusion during operation.
Does the ms28774-326 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 ms28774-326 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 ms28774-326.
Can I order the ms28774-326 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.