PACKING (P/N ms28774-08) - New Surplus
P/N: ms28774-08
Category: Seals
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 | 19 Available |
Product Description
The ms28774-08 is a PTFE back-up ring (packing retainer) conforming to MS28774 specifications for use in MIL-G-5514 grooves. This rectangular cross-section ring prevents O-ring extrusion and nibbling under pressure in aircraft hydraulic and pneumatic fittings. Constructed from polytetrafluoroethylene (PTFE) per SAE AS8791 material standards, it installs adjacent to the primary seal to provide structural support during high-pressure cycles.
Common in fluid system connections where seal integrity is critical.
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 PACKING (P/N ms28774-08)?
The ms28774-08 is a PTFE back-up ring (packing retainer) conforming to MS28774 specifications for use in MIL-G-5514 grooves. This rectangular cross-section ring prevents O-ring extrusion and nibbling under pressure in aircraft hydraulic and pneumatic fittings.
What material is the ms28774-08 made from?
Aircraft seals and O-rings are manufactured from various elastomers including nitrile (Buna-N), fluorocarbon (Viton), silicone, and PTFE depending on the application. The PACKING meets aviation specifications for its intended use. Contact us for specific material data.
Can I order the ms28774-08 in bulk quantities?
Yes, we stock seals and gaskets in quantity and offer bulk pricing. Submit a Request for Quote (RFQ) for volume orders, or call (904) 998-9101 for immediate quantity availability on the ms28774-08.
What is the shelf life of the ms28774-08?
Elastomeric seals have manufacturer-specified shelf lives that vary by material and storage conditions. We follow industry standards for cure date tracking and proper climate-controlled storage. Contact us for shelf life details on the ms28774-08.