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 6135-01-630-3158
NSN 6135-01-220-7193
NSN 5930-01-327-4239
NSN 2925-01-021-7563
NSN 6220-01-616-9805
NSN 7035-01-652-5482
NSN 6150-01-469-6128
NSN 5999-00-234-7503
NSN 6110-00-177-4657
NSN 5990-00-169-8922
NSN 5998-00-297-7144
NSN 4140-01-090-2926