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 6110-01-623-1391
NSN 6620-01-064-0366
NSN 5999-01-422-1676
NSN 5965-01-487-4479
NSN 5998-01-369-2814
NSN 6685-00-450-4496
NSN 5975-00-102-3829
NSN 5990-01-517-7848
NSN 5998-01-132-7458
NSN 6650-01-364-1313
NSN 6240-00-929-0585
NSN 6610-01-587-1172