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 6320-00-174-1362
NSN 6610-00-891-6370
NSN 6130-00-545-3069
NSN 6220-00-248-2547
NSN 6130-01-359-3888
NSN 7035-00-631-3782
NSN 6240-01-089-2655
NSN 4140-00-628-8751
NSN 6320-01-624-0193
NSN 6240-01-516-5589
NSN 5990-00-675-8398
NSN 6220-00-239-0302