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 5855-01-481-0819
NSN 5915-00-223-0940
NSN 5920-01-109-3117
NSN 6220-01-488-9416
NSN 6620-00-736-8457
NSN 6105-00-364-6554
NSN 5920-01-645-3462
NSN 6130-01-021-0028
NSN 5965-00-217-1113
NSN 5920-01-629-5200
NSN 5925-01-329-1660
NSN 2925-00-233-5644