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 6130-00-175-7179
NSN 6220-01-207-8068
NSN 5990-00-253-4323
NSN 6650-00-248-8913
NSN 5990-00-512-6367
NSN 6685-01-397-4138
NSN 6130-01-237-5992
NSN 5999-01-379-2462
NSN 6145-01-261-5150
NSN 5990-01-542-4212
NSN 4140-00-289-9263
NSN 5925-01-104-3445