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 6130-01-331-0264
NSN 5920-01-049-1275
NSN 2925-00-190-5561
NSN 2925-00-999-8967
NSN 5985-01-074-6950
NSN 5975-01-455-7904
NSN 6645-00-574-9712
NSN 6135-01-130-3145
NSN 6105-01-149-4248
NSN 5999-01-557-1940
NSN 6130-00-243-5284
NSN 2925-01-384-4139