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 6145-00-231-2058
NSN 2925-00-735-4979
NSN 6645-01-444-3016
NSN 6145-01-397-2709
NSN 5999-01-266-5785
NSN 6150-00-269-5017
NSN 5990-00-982-8030
NSN 5905-01-455-7159
NSN 5855-01-020-7982
NSN 6135-01-480-8121
NSN 6645-01-102-2321
NSN 5935-00-833-6640