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 5920-00-551-1314
NSN 6145-01-020-8428
NSN 6145-00-165-3869
NSN 5855-01-013-6864
NSN 5945-01-167-3028
NSN 5915-00-473-2112
NSN 5985-01-313-5253
NSN 5855-00-532-0025
NSN 2925-00-994-8684
NSN 5960-00-014-3445
NSN 6220-00-276-8681
NSN 5998-01-241-1911