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 5999-01-453-6447
NSN 6620-01-062-1662
NSN 5990-00-223-5938
NSN 6685-01-450-3304
NSN 6650-01-478-7301
NSN 6320-01-125-3361
NSN 4140-01-495-0865
NSN 5975-01-463-8030
NSN 6130-01-095-9335
NSN 5930-01-359-9053
NSN 5855-01-081-7594
NSN 7035-00-358-0470