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 6645-01-609-4753
NSN 5930-01-325-8300
NSN 6620-01-147-8439
NSN 6610-01-165-7024
NSN 6645-01-055-5427
NSN 5950-00-420-2919
NSN 6620-00-202-4547
NSN 5920-01-629-0843
NSN 6620-01-151-3986
NSN 5985-00-924-4730
NSN 5990-00-582-0342
NSN 6105-00-297-3762