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 5930-01-092-0744
NSN 2925-01-087-9290
NSN 5998-01-552-4370
NSN 6220-01-305-4768
NSN 5975-01-212-4306
NSN 6650-01-532-3632
NSN 5945-00-504-5744
NSN 6135-01-557-9656
NSN 5935-00-398-1584
NSN 6240-01-252-6599
NSN 5975-00-102-9947
NSN 5855-01-513-9601