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 5960-01-284-9209
NSN 5945-01-415-3654
NSN 2925-00-328-2018
NSN 5920-00-430-0093
NSN 6130-01-024-9968
NSN 5999-01-478-3974
NSN 5905-01-608-5210
NSN 5998-01-056-5268
NSN 6135-00-347-0595
NSN 6650-01-358-9800
NSN 5835-01-242-9806
NSN 6610-01-519-0997