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 5975-00-660-4294
NSN 5935-01-510-2072
NSN 6610-01-469-6235
NSN 5990-01-546-1649
NSN 5930-01-426-9130
NSN 5999-01-442-3529
NSN 5905-01-481-3943
NSN 6645-01-500-0827
NSN 6610-01-503-4379
NSN 6150-01-108-6153
NSN 5915-01-414-8607
NSN 6105-00-241-8071