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 5960-01-413-3877
NSN 5920-01-043-4848
NSN 6240-00-419-4301
NSN 6620-01-529-2518
NSN 5935-00-284-3984
NSN 5965-01-128-0117
NSN 5999-01-475-4021
NSN 5930-00-400-4126
NSN 5960-01-506-5854
NSN 6110-00-119-9416
NSN 5950-00-358-1140
NSN 5895-01-277-0811