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 5915-01-571-2124
NSN 6240-01-261-4958
NSN 5935-00-824-1809
NSN 5935-01-406-5075
NSN 5935-00-452-7203
NSN 5935-01-163-5200
NSN 6130-01-448-2987
NSN 2925-01-651-8683
NSN 5998-01-129-7454
NSN 5998-00-583-8617
NSN 5925-01-334-8402
NSN 6240-00-485-9986