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 5920-00-490-9176
NSN 5998-01-627-4901
NSN 5915-00-343-3806
NSN 2925-01-157-9204
NSN 5960-01-288-8910
NSN 6645-01-169-3978
NSN 6320-01-512-2031
NSN 5935-01-424-7471
NSN 6685-01-612-2825
NSN 6105-01-424-0275
NSN 7035-01-385-7306
NSN 6650-00-035-9297