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 6150-00-182-7102
NSN 6645-01-600-0772
NSN 5999-00-435-8478
NSN 6105-00-406-4930
NSN 6145-00-813-9096
NSN 5835-01-232-1226
NSN 6105-01-153-2302
NSN 5985-01-360-2588
NSN 6150-01-410-8215
NSN 5910-01-037-5868
NSN 6145-01-328-7991
NSN 5999-00-564-1579