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 5990-00-296-4825
NSN 6150-01-155-2215
NSN 7035-01-581-1202
NSN 5945-01-257-0155
NSN 6610-00-661-1797
NSN 5920-01-384-8751
NSN 5905-00-992-4443
NSN 6685-01-496-8443
NSN 4140-01-322-8133
NSN 5835-01-248-4320
NSN 5990-01-311-7491
NSN 5855-00-610-4052