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 5990-00-372-5177
NSN 6105-01-430-4030
NSN 5996-01-493-7962
NSN 6240-01-574-5642
NSN 5905-00-406-6179
NSN 5965-01-226-3502
NSN 5945-01-626-0491
NSN 5915-00-649-0561
NSN 6150-00-910-3934
NSN 6135-01-619-6293
NSN 6620-00-096-6306
NSN 5920-01-025-9381