PACKING RING (P/N MS28774-337) - New Surplus
P/N: MS28774-337
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 | 2 Available |
Product Description
The MS28774-337 is a PTFE packing ring designed to prevent O-ring extrusion in hydraulic and pneumatic glands. This backup ring works alongside elastomeric seals in static applications, resisting pressure-induced extrusion and gap formation. Manufactured to SAE AS8791 specifications with precision scarf-cut geometry, the ring provides secondary containment in glands per MIL-G-5514 standards.
Installation follows the aircraft maintenance manual or component CMM for proper orientation adjacent to the primary O-ring seal.
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 RING (P/N MS28774-337)?
The MS28774-337 is a PTFE packing ring designed to prevent O-ring extrusion in hydraulic and pneumatic glands. This backup ring works alongside elastomeric seals in static applications, resisting pressure-induced extrusion and gap formation.
What material is the MS28774-337 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 RING meets aviation specifications for its intended use. Contact us for specific material data.
Can I order the MS28774-337 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 MS28774-337.
What is the shelf life of the MS28774-337?
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 MS28774-337.