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 6135-01-521-7693
NSN 5999-01-157-7763
NSN 4140-01-420-6263
NSN 6145-01-452-9551
NSN 5965-00-934-3495
NSN 6220-01-292-7841
NSN 6145-01-540-6177
NSN 6650-00-078-5773
NSN 6220-01-227-1917
NSN 6105-01-136-1471
NSN 4140-00-288-8205
NSN 6610-00-288-5655