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 6220-01-268-2913
NSN 5910-01-282-3389
NSN 5996-00-150-8842
NSN 5905-01-550-4290
NSN 5965-01-224-4993
NSN 5835-00-475-6532
NSN 5965-01-144-3001
NSN 6110-01-338-1621
NSN 5990-01-320-9817
NSN 6650-00-115-2408
NSN 5990-01-357-6175
NSN 6130-01-557-4317