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 5935-00-822-3710
NSN 5996-01-133-2478
NSN 6135-00-767-0331
NSN 6220-01-349-8666
NSN 5835-00-770-2843
NSN 5960-00-729-8150
NSN 5998-01-163-7412
NSN 5855-01-160-3802
NSN 6620-01-250-1692
NSN 7035-01-462-5766
NSN 4140-00-137-9633
NSN 4140-01-262-7226