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 6645-01-477-1140
NSN 5998-01-264-9932
NSN 5855-01-253-7695
NSN 6645-00-300-0401
NSN 6220-00-930-8338
NSN 6645-01-388-0391
NSN 6110-00-257-5199
NSN 6105-01-502-3024
NSN 6110-00-443-4776
NSN 5920-01-514-8762
NSN 4140-00-081-6814
NSN 5905-00-126-6697