WASHER-HYDRALIC, PACKING BACKU (P/N ms28777-6) - New Surplus
P/N: ms28777-6
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 | 65 Available |
Product Description
The MS28777-6 is a leather hydraulic packing backup washer that supports seals in high-pressure glands. This secondary support element reduces seal extrusion and protects primary packing from excessive pressure. Installed in aircraft hydraulic actuators and valves adjacent to the main packing, it prevents gland damage during operation.
The washer conforms to Military Standard MS28777 specifications. Installation requires verification of gland size and orientation per the applicable component maintenance manual. Also referenced by NSN 5310-00-186-1295.
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 WASHER-HYDRALIC, PACKING BACKU (P/N ms28777-6)?
The MS28777-6 is a leather hydraulic packing backup washer that supports seals in high-pressure glands. This secondary support element reduces seal extrusion and protects primary packing from excessive pressure.
What material is the ms28777-6 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 WASHER-HYDRALIC, PACKING BACKU meets aviation specifications for its intended use. Contact us for specific material data.
Can I order the ms28777-6 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 ms28777-6.
What is the shelf life of the ms28777-6?
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 ms28777-6.
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