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 5985-01-359-2605
NSN 6610-01-119-7873
NSN 6650-00-153-9239
NSN 5905-00-260-0451
NSN 5915-00-995-2559
NSN 7035-00-870-0290
NSN 5920-01-166-7047
NSN 6130-00-972-3069
NSN 5960-00-800-3537
NSN 5960-01-017-0989
NSN 5925-01-546-4846
NSN 6320-01-067-0474