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 5999-01-546-2796
NSN 6650-00-751-9958
NSN 5915-01-660-3809
NSN 6240-00-964-1513
NSN 5999-01-275-7339
NSN 5950-01-427-3723
NSN 5960-01-399-4327
NSN 5920-00-449-6245
NSN 5855-01-652-6746
NSN 6105-00-900-4143
NSN 7035-01-327-4456
NSN 4140-01-157-8882