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 5990-01-588-3999
NSN 5905-01-583-6114
NSN 5920-01-250-0715
NSN 5855-00-532-0025
NSN 6130-01-201-4191
NSN 5960-01-526-3843
NSN 6220-00-522-2300
NSN 2925-01-604-8984
NSN 5935-00-947-4021
NSN 5915-00-542-2179
NSN 5930-00-076-1314
NSN 6650-01-360-3848