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 6130-01-474-8638
NSN 5990-00-137-3971
NSN 6320-00-731-6134
NSN 6320-00-036-3688
NSN 5998-01-118-8704
NSN 5990-01-303-6110
NSN 5975-00-971-8863
NSN 6650-01-272-9746
NSN 5990-00-855-9451
NSN 5920-00-529-0618
NSN 5965-00-926-2591
NSN 7035-01-145-5059