RETAINER,PACKING (P/N ms28774-125) - New Surplus
P/N: ms28774-125
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 | 4 Available |
Product Description
The ms28774-125 is a PTFE packing retainer (backup ring) conforming to MS28774/SAE AS8791 specifications. This scarf-cut, single-turn ring prevents O-ring extrusion in hydraulic and pneumatic system glands by providing structural support behind elastomeric seals. Installed in aircraft hydraulic components, actuators, and pneumatic cylinders where piston or rod grooves require backup protection under pressure cycling.
The retainer sits in the gland cavity per MIL-G-5514 dimensions, working in tandem with the primary O-ring seal to maintain pressure integrity across temperature and operational ranges typical in general aviation and commercial aircraft systems.
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 (P/N ms28774-125)?
The ms28774-125 is a PTFE packing retainer (backup ring) conforming to MS28774/SAE AS8791 specifications. This scarf-cut, single-turn ring prevents O-ring extrusion in hydraulic and pneumatic system glands by providing structural support behind elastomeric seals.
What material is the ms28774-125 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 RETAINER,PACKING meets aviation specifications for its intended use. Contact us for specific material data.
Can I order the ms28774-125 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 ms28774-125.
What is the shelf life of the ms28774-125?
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 ms28774-125.