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 6130-01-263-5724
NSN 6645-01-274-8770
NSN 6650-00-113-4102
NSN 5985-01-477-2657
NSN 5910-00-694-8293
NSN 6220-00-283-5050
NSN 5925-01-457-5668
NSN 6145-01-461-8062
NSN 4140-00-719-5654
NSN 6105-00-823-3088
NSN 5945-01-386-4660
NSN 5855-00-560-0110