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 4140-00-905-8331
NSN 5998-01-423-7852
NSN 6135-01-454-7041
NSN 6320-01-098-2503
NSN 5855-01-634-0259
NSN 6650-01-323-1354
NSN 5998-01-415-3841
NSN 6240-01-146-4839
NSN 7035-01-556-2554
NSN 5996-01-627-7593
NSN 6685-01-556-4246
NSN 6685-01-513-6183