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 5915-01-273-7966
NSN 5915-01-255-5301
NSN 6220-01-634-0660
NSN 6220-00-651-1957
NSN 7035-00-782-7046
NSN 6320-01-383-3257
NSN 6130-00-651-7326
NSN 6130-00-924-9096
NSN 5945-01-012-2235
NSN 5930-00-413-3167
NSN 4140-00-989-3257
NSN 6645-00-327-4005