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 5835-01-128-9331
NSN 5920-01-489-7090
NSN 5920-00-556-9993
NSN 5905-01-461-8937
NSN 5960-01-425-1454
NSN 4140-00-526-4505
NSN 6240-01-650-3757
NSN 5895-00-583-8339
NSN 5999-00-394-7191
NSN 5895-00-254-9521
NSN 5965-00-150-1144
NSN 6130-00-518-1884