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 6685-01-632-0940
NSN 5935-00-068-8524
NSN 6110-01-018-3654
NSN 5930-01-324-3266
NSN 2925-01-575-7376
NSN 5930-00-258-9754
NSN 2925-00-757-7028
NSN 5998-01-273-0124
NSN 5998-01-599-1249
NSN 6220-00-344-3189
NSN 4140-01-023-8846
NSN 5985-00-836-4783