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 6135-00-681-2702
NSN 5990-00-170-4239
NSN 6130-01-534-3801
NSN 6150-01-641-2489
NSN 5999-01-337-9493
NSN 6685-01-656-3886
NSN 6645-00-252-5798
NSN 5920-01-401-5315
NSN 6620-01-585-2357
NSN 5930-01-641-0407
NSN 6105-01-180-2807
NSN 6240-01-072-9652