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 5999-00-471-7455
NSN 6105-01-015-5035
NSN 5950-00-317-8257
NSN 5905-01-414-6970
NSN 5855-01-544-7588
NSN 5915-01-597-9432
NSN 5998-01-443-1792
NSN 6650-01-464-3545
NSN 5915-01-440-1227
NSN 2925-01-194-9737
NSN 6105-01-022-6321
NSN 6130-00-905-0644