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 6105-01-143-2217
NSN 5920-00-425-2878
NSN 6220-01-281-6063
NSN 5855-00-304-7163
NSN 5855-00-079-2370
NSN 5965-00-644-0334
NSN 6610-01-406-4985
NSN 6650-00-324-4973
NSN 5999-00-833-6170
NSN 6220-00-117-4547
NSN 7035-01-344-4192
NSN 4140-01-487-7425