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 5999-01-616-7602
NSN 5915-01-468-0053
NSN 5935-01-188-7658
NSN 5925-01-422-4569
NSN 6220-01-382-7997
NSN 5999-00-736-4198
NSN 5915-01-115-7398
NSN 5965-00-775-6496
NSN 6240-00-126-4551
NSN 5950-01-250-1762
NSN 5965-00-978-8535
NSN 6650-00-193-7358