PACKING WITH RETAINER (P/N nas1523-4y) - New Surplus

The NAS1523-4Y is a packing with retainer assembly for -4 straight-thread boss fittings. It combines a steel retainer with a nitrile elastomer sealing element to provide a positive face seal meeting NAS1523 specifications. Installed beneath the fitting head in aircraft hydraulic systems, the retainer seats on the boss face to seal connections under pressure.

Installation requires positioning the packing assembly and torquing per the applicable maintenance manual specifications.

What is the PACKING WITH RETAINER (P/N nas1523-4y)?

The NAS1523-4Y is a packing with retainer assembly for -4 straight-thread boss fittings. It combines a steel retainer with a nitrile elastomer sealing element to provide a positive face seal meeting NAS1523 specifications.

What material is the nas1523-4y 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 PACKING WITH RETAINER meets aviation specifications for its intended use. Contact us for specific material data.

Can I order the nas1523-4y 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 nas1523-4y.

What is the shelf life of the nas1523-4y?

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 nas1523-4y.