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 5960-01-014-1595
NSN 6650-01-526-0828
NSN 6240-01-354-2626
NSN 7035-01-539-9642
NSN 5999-00-959-7144
NSN 5935-00-807-0280
NSN 6650-01-399-8552
NSN 5985-00-875-1875
NSN 5910-01-320-0931
NSN 5998-01-055-6043
NSN 6620-00-816-8240
NSN 5985-01-044-0448