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 6135-01-462-0731
NSN 6110-01-370-4984
NSN 5999-01-625-5974
NSN 5999-01-624-1639
NSN 4140-01-364-7845
NSN 6110-01-181-7187
NSN 5930-01-461-5821
NSN 5965-00-170-5254
NSN 5905-01-391-7497
NSN 6220-01-042-6454
NSN 5985-00-438-2962
NSN 5999-01-568-7608