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 5999-01-401-5322
NSN 5910-01-431-8169
NSN 5999-01-179-5149
NSN 5930-01-420-0135
NSN 6130-00-132-3267
NSN 4140-00-242-6465
NSN 5920-00-196-3631
NSN 2925-00-242-7688
NSN 5835-00-711-3371
NSN 5985-01-578-7629
NSN 6150-01-462-7902
NSN 6240-01-484-0335