RETAINER,PACKING (P/N ms28774-329) - New Surplus
P/N: ms28774-329
Category: Studs, Inserts & Fastener Hardware
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 | 7 Available |
Product Description
The ms28774-329 is a single-turn PTFE back-up ring conforming to MS28774 specifications. This packing retainer supports O-rings in static sealing applications and prevents extrusion under pressure. Installed in gland grooves alongside MS28784 or MS29513 O-rings, the scarf-cut design maintains seal integrity in hydraulic, fuel, and pneumatic systems.
Material and geometry follow SAE AS8791 aerospace standards. Verify groove dimensions and installation requirements per the aircraft maintenance manual or component overhaul manual before service.
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 ms28774-329)?
The ms28774-329 is a single-turn PTFE back-up ring conforming to MS28774 specifications. This packing retainer supports O-rings in static sealing applications and prevents extrusion under pressure.
Does the ms28774-329 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The RETAINER,PACKING 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 ms28774-329 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 ms28774-329.
Can I order the ms28774-329 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The RETAINER,PACKING is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.
Related Studs, Inserts & Fastener Hardware
- RETAINER – P/N 2616023-4
- ANCHOR PLATE – P/N 1020514-01
- MLG INSERT – P/N 22-3210-00-17
- RETAINER – P/N ms27595-010
- SLEEVE – P/N 206-011-713-001
- RETAINER – P/N 25-8ws3151-4
- SLEEVE – P/N 3113605-01
- COLLAR – P/N 035a-63055
- COLLAR,PIN-RIVET,THREADED – P/N 30-017-8
- FASTENER,CERAMETALLIC LINING – P/N 153223
- SLEEVE, GLASS SILICONE – P/N BAS160-3-3-1/2
- STUD,TURNLOCK FASTENER – P/N 50-007a6