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 5999-00-080-2117
NSN 5945-01-182-8743
NSN 6610-00-285-5366
NSN 4140-00-660-8699
NSN 6150-01-588-8210
NSN 5930-00-353-4235
NSN 5999-01-075-6165
NSN 2925-01-164-9579
NSN 5998-00-113-2320
NSN 5960-01-487-6436
NSN 5990-01-205-4746
NSN 6105-01-307-3784