WASHER-HYDRALIC, PACKING BACKU (P/N ms28777-6) - New Surplus

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.

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 conditions is the ms28777-6 available in?

The ms28777-6 is currently available in the following conditions: New Surplus. Each condition reflects the part's maintenance history and certification status per FAA standards.

How do I get pricing for the ms28777-6?

The ms28777-6 requires a custom quote. Submit a Request for Quote (RFQ) through our website or call our sales team at (904) 998-9101 for immediate pricing assistance.

Do you offer expedited shipping for the ms28777-6?

Yes, we offer same-day processing on in-stock items and provide 24/7 AOG (Aircraft on Ground) support for urgent needs. Standard, expedited, and overnight shipping options are available.