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 6320-00-194-4252
NSN 5965-00-958-7455
NSN 5985-00-933-9334
NSN 6645-01-338-1423
NSN 5935-01-279-1308
NSN 4140-01-100-1223
NSN 5920-01-058-4961
NSN 6650-01-019-7521
NSN 5910-01-353-6904
NSN 5985-01-512-1486
NSN 5965-01-399-8454
NSN 6220-01-183-9861