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 5905-01-023-4175
NSN 5915-01-142-3713
NSN 6650-00-162-0951
NSN 4140-00-179-3977
NSN 6650-00-427-7858
NSN 5935-01-325-4709
NSN 5945-00-881-7187
NSN 6145-01-558-9683
NSN 5999-01-350-3137
NSN 7035-01-658-9769
NSN 6145-01-240-3909
NSN 6320-01-129-9656