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 5910-01-158-2372
NSN 4140-01-417-5404
NSN 4140-00-679-9512
NSN 5975-00-765-4271
NSN 6130-01-316-1601
NSN 6105-01-258-5884
NSN 6610-00-667-6832
NSN 5910-00-522-5208
NSN 6645-00-780-5260
NSN 6135-01-487-6275
NSN 5930-01-460-9110
NSN 6645-00-763-4852