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 5920-00-317-2219
NSN 5998-01-487-0310
NSN 6135-00-087-5300
NSN 5925-00-316-5312
NSN 5925-01-252-1692
NSN 6645-00-262-7448
NSN 5855-00-014-5008
NSN 5990-01-619-0935
NSN 4140-01-245-8866
NSN 6685-01-397-8694
NSN 6685-01-546-8147
NSN 6130-00-204-2976