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 5960-00-504-6757
NSN 5975-01-114-5853
NSN 4140-00-015-6729
NSN 7035-00-541-8516
NSN 5910-01-083-1064
NSN 6620-00-553-8988
NSN 5915-01-378-7501
NSN 6150-01-454-7758
NSN 6685-01-536-6874
NSN 5925-01-423-7803
NSN 5945-01-462-5903
NSN 5960-00-170-6447