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 5965-00-187-2736
NSN 5920-01-195-7563
NSN 5920-00-100-7219
NSN 5905-00-932-1743
NSN 6610-00-001-2517
NSN 6135-01-329-6022
NSN 5915-01-551-7405
NSN 6240-01-160-7934
NSN 6150-01-612-7132
NSN 6620-00-959-6614
NSN 4140-00-242-0902
NSN 6320-00-583-3104