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 6320-01-255-2096
NSN 5905-00-661-2395
NSN 7035-01-381-7622
NSN 5950-00-953-1087
NSN 6620-01-552-0524
NSN 7035-01-563-6118
NSN 5905-01-260-8564
NSN 5975-00-865-3537
NSN 5920-01-441-2481
NSN 5945-01-206-7035
NSN 6645-01-542-3672
NSN 6105-00-719-9943