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 6240-00-132-5375
NSN 5998-01-145-9624
NSN 5920-01-534-3806
NSN 5910-01-057-6037
NSN 6645-01-215-0617
NSN 5998-01-444-0919
NSN 5935-01-353-9983
NSN 5905-00-288-7771
NSN 6220-01-206-4801
NSN 5945-01-272-2266
NSN 5935-01-499-0881
NSN 5895-01-464-3810