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 5925-00-144-0482
NSN 5960-01-100-4454
NSN 6645-01-565-6973
NSN 6620-01-337-0652
NSN 6620-01-334-7569
NSN 5998-00-258-2081
NSN 5935-00-270-1271
NSN 6150-00-518-2743
NSN 5930-01-306-3414
NSN 6645-00-825-5677
NSN 5960-01-507-9112
NSN 5835-01-514-5758