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 5920-01-534-5933
NSN 5990-01-527-7640
NSN 5910-01-130-6115
NSN 6145-01-580-0334
NSN 6620-00-409-8506
NSN 6145-00-284-1514
NSN 5998-00-267-8134
NSN 5835-00-494-8419
NSN 6105-01-341-0209
NSN 7035-00-870-0290
NSN 5930-01-489-6205
NSN 5930-01-363-4231