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 5895-00-137-0439
NSN 5855-00-879-7245
NSN 6135-00-702-2772
NSN 5835-00-946-2656
NSN 4140-00-269-5795
NSN 5996-00-542-3997
NSN 5920-01-225-3336
NSN 6240-00-246-5060
NSN 5985-01-338-6686
NSN 6150-01-122-3924
NSN 6220-00-944-4512
NSN 6645-00-958-0354