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 5920-01-554-3886
NSN 5985-01-514-8170
NSN 5925-00-337-8138
NSN 5910-00-058-0746
NSN 5895-01-553-0499
NSN 4140-01-371-0327
NSN 6650-01-540-5157
NSN 5998-01-384-1940
NSN 6685-00-184-0937
NSN 6320-00-242-3300
NSN 5965-01-612-6390
NSN 6130-01-227-4805