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 6105-00-828-4178
NSN 6135-01-242-6484
NSN 5975-01-445-1632
NSN 4140-01-588-9735
NSN 5925-01-411-5101
NSN 5915-01-658-2788
NSN 6130-00-991-0566
NSN 6685-01-443-6399
NSN 6240-00-847-8091
NSN 5905-01-125-5787
NSN 6650-00-539-7298
NSN 4140-01-551-7286