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 6620-01-150-5072
NSN 5945-01-350-3254
NSN 5895-01-459-7527
NSN 5835-01-024-0406
NSN 5915-01-479-6403
NSN 7035-01-085-5955
NSN 5925-01-032-3461
NSN 5998-00-052-1046
NSN 5999-01-408-6881
NSN 6150-01-408-6144
NSN 5925-00-406-6398
NSN 6610-01-545-0766