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 5996-01-359-5912
NSN 6145-01-566-2732
NSN 6130-00-478-6971
NSN 5999-01-401-5322
NSN 6145-01-314-9897
NSN 5945-01-485-2402
NSN 5920-01-499-1255
NSN 6240-01-384-4868
NSN 5960-00-486-8229
NSN 2925-00-956-3848
NSN 6130-01-513-9514
NSN 5975-00-236-0841