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 4140-01-606-8772
NSN 6685-01-415-0972
NSN 5965-01-236-8281
NSN 5930-01-381-2523
NSN 5915-01-023-8599
NSN 5960-01-100-0089
NSN 6650-01-318-9413
NSN 7035-01-344-8708
NSN 5910-00-542-2010
NSN 5920-00-752-3081
NSN 5965-01-418-7226
NSN 5835-01-112-9008