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 6105-01-161-8053
NSN 4140-01-295-8264
NSN 6135-01-049-5980
NSN 5920-00-433-1854
NSN 6645-01-537-5773
NSN 5925-00-353-0612
NSN 6145-01-239-0679
NSN 6105-00-058-1153
NSN 6645-01-459-9586
NSN 5965-00-639-6621
NSN 5998-00-236-3398
NSN 4140-00-640-6608