BACK (P/N ms28774-221) - New Surplus
P/N: ms28774-221
Category: General Aircraft Parts
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 | 8 Available |
Product Description
The MS28774-221 is a PTFE back-up ring with scarf-cut design per Military Standard MS28774. This component seats directly behind an O-ring to prevent extrusion under system pressure in hydraulic and pneumatic applications. Commonly installed in hydraulic actuators, the back-up ring provides structural support to elastomer seals during high-pressure cycles.
Position the ring on the low-pressure side of the O-ring per maintenance manual specifications. PTFE material resists deformation while maintaining compatibility with hydraulic fluids and pneumatic gases across typical operating temperature ranges.
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 BACK (P/N ms28774-221)?
The MS28774-221 is a PTFE back-up ring with scarf-cut design per Military Standard MS28774. This component seats directly behind an O-ring to prevent extrusion under system pressure in hydraulic and pneumatic applications.
What conditions is the ms28774-221 available in?
The ms28774-221 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 ms28774-221?
The ms28774-221 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 ms28774-221?
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.
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