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 6145-00-949-3331
NSN 6650-00-035-9297
NSN 6145-00-504-5221
NSN 6620-01-063-6289
NSN 5905-01-397-8237
NSN 5935-01-308-6664
NSN 5965-01-417-3211
NSN 6220-01-452-1953
NSN 5925-01-502-3053
NSN 5985-01-258-2372
NSN 6320-01-136-6842
NSN 5996-01-313-5574