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 5996-01-183-3632
NSN 5920-00-661-0840
NSN 5990-01-594-7470
NSN 5915-00-425-6181
NSN 4140-01-210-8049
NSN 5945-01-421-4135
NSN 6150-01-575-6045
NSN 6105-01-502-8216
NSN 6220-01-034-1231
NSN 5950-00-954-2299
NSN 5965-01-262-3513
NSN 6110-01-377-0508