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 5855-01-147-3262
NSN 5855-00-150-1820
NSN 7035-00-076-4097
NSN 4140-01-608-3992
NSN 5990-01-612-5323
NSN 6130-01-652-1312
NSN 5998-01-162-9427
NSN 5998-00-850-0398
NSN 6110-00-144-6763
NSN 5999-01-210-0593
NSN 6150-00-398-6527
NSN 5855-00-991-0096