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 5895-01-475-4706
NSN 4140-01-422-7319
NSN 2925-00-796-5414
NSN 5905-01-497-7708
NSN 5910-01-486-3391
NSN 6320-01-017-5274
NSN 6105-01-377-0983
NSN 5960-01-328-8248
NSN 5990-00-082-3107
NSN 5996-00-848-9090
NSN 7035-00-731-8729
NSN 6130-01-094-2037