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 5910-01-537-3169
NSN 5998-01-448-9588
NSN 6135-00-196-5267
NSN 5920-01-177-9200
NSN 5999-01-649-0347
NSN 7035-01-165-0234
NSN 6645-00-909-2143
NSN 5905-00-397-3032
NSN 6685-01-281-8860
NSN 5960-01-609-6565
NSN 5999-01-048-0692
NSN 5985-01-125-5336