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 6645-00-925-3857
NSN 6650-01-361-3060
NSN 2925-01-462-1620
NSN 6110-00-845-0524
NSN 6645-01-012-7670
NSN 5895-01-116-3271
NSN 6135-00-223-9563
NSN 6150-00-959-5565
NSN 5905-01-435-8291
NSN 6320-00-731-6134
NSN 2925-00-917-1987
NSN 5920-01-535-0796