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 5930-01-072-6105
NSN 5975-00-698-0425
NSN 5905-00-104-1458
NSN 6150-01-268-4739
NSN 5996-01-138-6182
NSN 6620-01-287-1443
NSN 5905-01-078-8924
NSN 5895-00-847-7798
NSN 5915-00-716-1821
NSN 5945-01-042-2258
NSN 5985-00-017-8723
NSN 6105-00-086-9951