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 5930-00-969-3340
NSN 5920-01-285-5674
NSN 5985-01-465-4141
NSN 6650-01-574-7646
NSN 6240-01-576-3185
NSN 5985-01-258-0699
NSN 5895-00-722-6471
NSN 5945-01-462-1555
NSN 6145-01-385-6505
NSN 6645-01-215-0617
NSN 7035-00-523-7492
NSN 5960-01-512-0233