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 5998-01-453-4687
NSN 5935-00-617-8511
NSN 4140-00-205-0853
NSN 5996-01-592-5083
NSN 5999-01-346-0850
NSN 6150-01-305-8102
NSN 6320-01-512-2031
NSN 5855-00-631-4565
NSN 6645-00-641-3202
NSN 5835-01-118-4690
NSN 6130-01-009-8441
NSN 5965-01-152-9004