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 5915-01-012-9002
NSN 5975-01-542-8566
NSN 5930-01-153-2667
NSN 5960-01-309-0361
NSN 6650-01-207-0829
NSN 5945-01-070-3772
NSN 6645-01-147-5579
NSN 5930-01-063-7823
NSN 6645-01-197-9090
NSN 6110-01-007-2211
NSN 6240-00-729-9696
NSN 5835-00-594-4921