A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5975-00-451-0230
NSN 6645-01-458-8379
NSN 6110-00-596-9124
NSN 5895-00-072-7709
NSN 6105-01-552-5660
NSN 5895-01-349-6942
NSN 6145-01-434-5848
NSN 5998-01-223-6466
NSN 5975-01-188-7901
NSN 5925-01-030-2967
NSN 2925-01-505-1666
NSN 5895-00-118-1895