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 5999-01-063-8092
NSN 5935-01-583-6878
NSN 6645-00-269-2764
NSN 6685-00-758-8551
NSN 5965-01-063-7894
NSN 5905-01-538-3687
NSN 5998-01-620-4469
NSN 5998-01-204-1777
NSN 5975-01-273-0971
NSN 5996-00-473-5283
NSN 6685-00-945-4979
NSN 6220-01-242-9901