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 6130-00-670-0880
NSN 5915-01-563-4161
NSN 5960-00-089-1632
NSN 6320-01-631-7828
NSN 4140-01-392-0495
NSN 5965-00-497-1130
NSN 6320-00-164-4087
NSN 5985-01-474-4409
NSN 6320-01-583-6809
NSN 2925-01-123-5856
NSN 6240-01-534-5829
NSN 5990-01-108-7785