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 6620-00-255-5962
NSN 6105-01-294-7321
NSN 5990-01-421-5342
NSN 6110-00-014-8160
NSN 5965-01-023-4965
NSN 5975-01-397-2831
NSN 6105-00-082-3210
NSN 5996-01-030-0052
NSN 5915-01-352-5871
NSN 2925-01-288-2091
NSN 5998-01-249-7850
NSN 5990-01-621-6969