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 6135-01-184-0727
NSN 6650-01-024-9554
NSN 6145-01-264-8574
NSN 5960-01-397-1443
NSN 5915-01-279-4357
NSN 5935-01-572-4422
NSN 6645-00-527-7258
NSN 5999-01-483-3697
NSN 5910-00-753-7581
NSN 2925-00-211-4761
NSN 6135-01-622-1296
NSN 6240-01-107-4079