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 5895-01-180-9651
NSN 6130-00-227-2124
NSN 5960-00-270-8171
NSN 6620-00-795-0330
NSN 6320-01-631-7828
NSN 5985-01-629-7523
NSN 5960-01-237-2336
NSN 5975-01-118-5247
NSN 5935-01-187-6363
NSN 5910-00-104-8320
NSN 5965-01-399-7851
NSN 5835-00-358-4235