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 5920-01-340-6950
NSN 5990-01-254-3197
NSN 5990-01-050-7535
NSN 4140-01-182-4653
NSN 5835-01-250-2939
NSN 6645-01-564-7129
NSN 5965-01-029-5222
NSN 5935-01-289-7650
NSN 5935-00-308-7937
NSN 5935-00-036-1329
NSN 6240-01-546-8339
NSN 5895-01-362-5193