NAS1523 Fastener Seals

Freudenberg NAS1523 Fastener Seals are metal retainers with integrated elastomer sealing elements, suitable for aerospace, automotive, and industrial applications. Available in various AMS/Mil-Spec elastomers, they ensure secure sealing and pressure testing to NAS1523 specifications. Benefits include one-piece sealing, no O-ring groove needed, and a bonded design preventing displacement. Users are responsible for full-scale testing and end product performance.

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