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 6240-00-155-5817
NSN 6220-01-063-7287
NSN 6685-01-425-1191
NSN 5835-01-625-8604
NSN 5998-00-930-5462
NSN 5996-01-484-8867
NSN 6645-01-259-4231
NSN 6110-01-197-7917
NSN 6650-01-594-9915
NSN 5960-01-193-5224
NSN 6320-01-652-3806
NSN 5960-01-161-7240