O-RING, PREFORMED (P/N MS28778-6) - New Surplus, As Removed, New
P/N: MS28778-6
Category: O-Rings
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 | 177 Available |
| As Removed | 3 Available |
| New | 9 Available |
Product Description
The MS28778-6 is a preformed nitrile rubber O-ring designed for straight-thread hydraulic boss fittings per Military Standard MS28778. Molded to MIL-P-5510/AMS-P-5510 specifications with 90 Shore A hardness, this seal handles petroleum-based hydraulic fluids in aircraft systems. It seals hydraulic ports and tube fitting connections to prevent fluid leakage under pressure and vibration.
Installation requires matching the dash number to the aircraft Illustrated Parts Catalog and following the applicable maintenance manual procedures for proper seating and torque specifications.
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 O-RING, PREFORMED (P/N MS28778-6)?
The MS28778-6 is a preformed nitrile rubber O-ring designed for straight-thread hydraulic boss fittings per Military Standard MS28778. Molded to MIL-P-5510/AMS-P-5510 specifications with 90 Shore A hardness, this seal handles petroleum-based hydraulic fluids in aircraft systems.
What material is the MS28778-6 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 O-RING, PREFORMED meets aviation specifications for its intended use. Contact us for specific material data.
Can I order the MS28778-6 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 MS28778-6.
What is the shelf life of the MS28778-6?
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 MS28778-6.
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