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 6145-01-257-7495
NSN 6105-01-247-8464
NSN 6150-01-651-8863
NSN 6620-00-904-2139
NSN 6135-01-340-8836
NSN 7035-01-641-6768
NSN 6685-00-073-3469
NSN 5835-00-958-6231
NSN 5835-01-177-1092
NSN 5855-00-832-9341
NSN 6650-00-005-3514
NSN 6150-00-739-4425