RETAINER, PACKING BACKUP (P/N ms28773-08) - New Surplus
P/N: ms28773-08
Category: Studs, Inserts & Fastener Hardware
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Available Inventory
| Condition | Price | Stock |
|---|---|---|
| New Surplus | $1.00 | 17 Available |
Product Description
The MS28773-08 is a PTFE scarf-cut packing backup retainer designed to support O-rings and prevent extrusion in aircraft hydraulic tube fittings. This ring installs in a groove immediately behind the primary O-ring seal within fitting glands, containing pressure and limiting radial movement of the elastomer. Commonly used in high-pressure hydraulic systems on general and commercial aircraft.
Installation follows the applicable tube fitting maintenance manual and MS/AS specifications for groove dimensions and torque requirements.
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 RETAINER, PACKING BACKUP (P/N ms28773-08)?
The MS28773-08 is a PTFE scarf-cut packing backup retainer designed to support O-rings and prevent extrusion in aircraft hydraulic tube fittings. This ring installs in a groove immediately behind the primary O-ring seal within fitting glands, containing pressure and limiting radial movement of the elastomer.
Does the ms28773-08 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The RETAINER, PACKING BACKUP conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.
What material is the ms28773-08 manufactured from?
Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the ms28773-08.
Can I order the ms28773-08 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The RETAINER, PACKING BACKUP is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.
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