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 6645-01-328-1034
NSN 5895-01-399-4108
NSN 5910-01-097-4177
NSN 6645-00-177-4729
NSN 5990-00-566-5987
NSN 5950-01-601-5124
NSN 6135-00-767-0331
NSN 6650-01-462-0830
NSN 5975-01-146-4240
NSN 6130-01-146-0999
NSN 6650-01-350-5109
NSN 5920-01-378-2490