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 5930-00-898-1822
NSN 5920-01-022-1978
NSN 5855-01-519-2486
NSN 6320-01-512-2031
NSN 6130-01-193-5230
NSN 6320-01-039-5891
NSN 5990-01-071-7764
NSN 5935-01-609-3931
NSN 6135-01-608-3470
NSN 6110-01-311-5655
NSN 5965-01-074-1991
NSN 5835-00-572-7445