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 6685-00-758-4229
NSN 5910-01-340-7404
NSN 5920-00-198-4337
NSN 5925-01-501-7624
NSN 6650-00-677-2577
NSN 6620-00-072-1927
NSN 5915-01-219-9088
NSN 6130-00-819-1266
NSN 7035-01-596-3411
NSN 4140-01-375-2111
NSN 6220-00-988-3230
NSN 5965-00-400-6228