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 6650-01-265-0650
NSN 7035-00-470-4977
NSN 5920-01-009-8121
NSN 5935-00-261-6389
NSN 5935-01-297-3973
NSN 6645-01-024-2133
NSN 4140-00-166-2228
NSN 6645-01-007-2063
NSN 5915-01-133-3683
NSN 6650-00-153-9239
NSN 5998-00-182-7932
NSN 5835-00-471-2660