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 4140-01-025-4911
NSN 5920-00-285-2245
NSN 6240-00-170-5302
NSN 5925-01-607-6279
NSN 4140-01-565-8046
NSN 5915-01-557-3392
NSN 4140-01-187-4990
NSN 5996-00-021-2112
NSN 5996-01-547-9155
NSN 5905-01-379-7028
NSN 5935-01-600-9712
NSN 5915-00-146-2451