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 6150-00-259-4632
NSN 5996-01-021-8134
NSN 6645-01-038-6978
NSN 6685-01-519-6746
NSN 5990-01-262-4068
NSN 5965-01-104-6277
NSN 6610-01-142-8958
NSN 6685-01-350-3451
NSN 5950-00-830-2712
NSN 5998-01-388-9839
NSN 5905-00-592-8084
NSN 4140-00-617-0984