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 6610-00-686-1557
NSN 5935-01-462-6412
NSN 5975-01-417-1752
NSN 5998-00-312-3060
NSN 5990-01-542-4212
NSN 6110-00-810-4142
NSN 6220-00-258-2967
NSN 6150-01-544-3021
NSN 5855-01-006-1827
NSN 6150-01-150-8964
NSN 5965-00-338-6955
NSN 6620-01-074-9377