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 6150-01-533-2551
NSN 5920-00-291-1187
NSN 6685-01-135-8936
NSN 5905-01-502-7028
NSN 5975-00-724-3147
NSN 5996-00-205-2933
NSN 5835-01-501-0526
NSN 5985-00-658-9652
NSN 2925-01-660-0669
NSN 6220-01-082-5396
NSN 7035-00-517-8232
NSN 7035-01-062-0184