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 5920-00-981-5803
NSN 5998-01-391-8001
NSN 6150-00-115-6649
NSN 6150-01-251-9333
NSN 5998-01-023-0732
NSN 5975-00-459-4172
NSN 6130-01-168-8507
NSN 6145-01-369-1622
NSN 5945-01-214-0388
NSN 6130-01-352-7062
NSN 5915-01-191-3762
NSN 6610-01-291-4173