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 6130-01-473-5880
NSN 6150-01-322-4927
NSN 5990-01-174-6851
NSN 6320-01-411-7469
NSN 5930-01-048-1669
NSN 2925-00-477-2654
NSN 5965-00-224-6034
NSN 7035-01-219-9476
NSN 5930-01-654-9281
NSN 5910-01-063-5066
NSN 5945-01-443-1517
NSN 5998-01-244-1729