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 6650-01-379-9130
NSN 6620-00-596-1951
NSN 6685-00-740-3259
NSN 5835-01-350-9701
NSN 5920-00-345-5833
NSN 6145-01-537-0952
NSN 5930-00-666-2971
NSN 5895-01-020-3531
NSN 5920-01-571-8575
NSN 5960-00-269-4762
NSN 5920-01-226-4766
NSN 6135-01-542-0659