RING (P/N an6291-4) - New Surplus

The AN6291-4 is a packing retainer ring that positions and supports preformed packing or O-rings within hydraulic and pneumatic component glands. This metal ring holds sealing elements in place during assembly and operation, preventing displacement under pressure cycling. Cross-referenced as MS28777-4, the AN6291-4 installs per aircraft maintenance manual specifications.

Verify gland dimensions and ring suitability in the Illustrated Parts Catalog before installation on your specific aircraft system.

What is the RING (P/N an6291-4)?

The AN6291-4 is a packing retainer ring that positions and supports preformed packing or O-rings within hydraulic and pneumatic component glands. This metal ring holds sealing elements in place during assembly and operation, preventing displacement under pressure cycling.

What conditions is the an6291-4 available in?

The an6291-4 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 an6291-4?

The an6291-4 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 an6291-4?

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.