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 7035-01-512-1826
NSN 5855-00-327-2112
NSN 5999-00-015-1282
NSN 5998-01-496-0391
NSN 6610-01-108-8914
NSN 5905-01-580-0370
NSN 4140-00-555-3856
NSN 6645-01-042-4220
NSN 6130-00-344-8161
NSN 5910-01-391-3459
NSN 5915-01-412-1374
NSN 5975-00-860-6305