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 6135-00-932-3136
NSN 6650-01-395-5991
NSN 5996-00-100-4932
NSN 6135-01-074-8220
NSN 6130-01-523-7783
NSN 5905-01-182-1327
NSN 5925-00-189-6467
NSN 5915-00-096-7330
NSN 6650-01-648-3903
NSN 6240-01-435-5868
NSN 5935-01-025-3516
NSN 5930-01-559-6308