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 4140-01-007-8902
NSN 6130-00-116-3416
NSN 6220-01-468-5596
NSN 5950-01-130-0246
NSN 5930-01-156-9913
NSN 5998-01-231-9107
NSN 7035-00-628-3471
NSN 6685-01-068-6514
NSN 5855-00-451-5224
NSN 6220-01-526-5854
NSN 6135-00-180-5125
NSN 6685-00-615-0559