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 6645-00-829-8868
NSN 6150-01-054-1696
NSN 6110-01-316-4514
NSN 2925-01-567-8027
NSN 6135-01-068-0119
NSN 5999-01-459-8452
NSN 5999-00-192-9394
NSN 5905-01-416-6483
NSN 6220-01-607-0748
NSN 6220-01-268-7553
NSN 5996-01-323-7763
NSN 5965-01-005-0341