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 6620-01-255-7757
NSN 4140-01-494-9843
NSN 6240-01-628-9240
NSN 5915-01-386-6234
NSN 5835-00-518-4507
NSN 5835-00-289-9080
NSN 6150-00-017-2827
NSN 5915-01-536-7950
NSN 5855-01-325-9507
NSN 5855-01-369-5037
NSN 6150-00-839-3344
NSN 5935-01-347-1634