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 6685-01-113-8759
NSN 6105-00-306-0913
NSN 5915-00-223-2686
NSN 5996-00-161-4202
NSN 5915-00-138-3358
NSN 5935-00-162-7706
NSN 5920-00-425-2878
NSN 5999-01-349-0870
NSN 4140-01-088-7512
NSN 5925-00-450-8717
NSN 5996-01-473-2183
NSN 7035-01-468-6532