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 7035-01-462-7731
NSN 5895-01-153-2249
NSN 6130-01-366-2284
NSN 2925-01-123-5856
NSN 5920-00-758-5656
NSN 5965-01-513-9978
NSN 5975-00-900-4013
NSN 6620-01-129-8943
NSN 6130-00-443-6963
NSN 5996-01-351-6485
NSN 5910-01-084-2943
NSN 4140-00-378-3399