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 5999-00-878-6966
NSN 5910-01-258-6631
NSN 6320-01-072-2073
NSN 5975-00-945-9065
NSN 6110-01-128-8583
NSN 6645-00-256-4072
NSN 6130-00-896-6262
NSN 5855-00-256-5562
NSN 6645-01-496-5694
NSN 6610-00-273-9019
NSN 5998-01-198-5431
NSN 5985-01-649-2547