BACK (P/N ms28774-142) - New Surplus
P/N: ms28774-142
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 | 10 Available |
Product Description
The MS28774-142 is a PTFE backup ring designed to prevent O-ring extrusion in high-pressure hydraulic glands. This single-turn scarf-cut ring installs behind the O-ring on the low-pressure side, stabilizing the seal and controlling extrusion under pressure cycling. The ring conforms to MS28774 specifications and fits grooves defined by MIL-G-5514/MIL-P-5514 aerospace standards.
Commonly used in aircraft hydraulic systems, fuel system interfaces, and pneumatic applications where pressure differentials exceed O-ring capabilities alone. Installation follows MS28774 groove practice—verify compatibility with your aircraft IPC before use.
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 ms28774-142)?
The MS28774-142 is a PTFE backup ring designed to prevent O-ring extrusion in high-pressure hydraulic glands. This single-turn scarf-cut ring installs behind the O-ring on the low-pressure side, stabilizing the seal and controlling extrusion under pressure cycling.
What conditions is the ms28774-142 available in?
The ms28774-142 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 ms28774-142?
The ms28774-142 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 ms28774-142?
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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