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 6135-01-388-7210
NSN 6685-00-872-5689
NSN 5835-01-352-7211
NSN 4140-00-066-7932
NSN 6135-01-140-8201
NSN 5925-01-024-9568
NSN 6320-01-390-5385
NSN 6610-00-251-7073
NSN 6145-01-476-4056
NSN 5950-00-158-5352
NSN 6105-00-902-6686
NSN 4140-00-722-4407