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 6320-01-436-0513
NSN 6610-00-051-0989
NSN 6150-00-519-9746
NSN 6650-01-272-9746
NSN 6610-01-454-6582
NSN 6645-01-560-8271
NSN 2925-01-542-1865
NSN 5945-01-122-5176
NSN 5960-01-013-9346
NSN 5905-01-268-2246
NSN 6610-01-609-7776
NSN 7035-01-041-2754