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 6240-01-352-3642
NSN 5930-00-943-2082
NSN 5895-00-104-8294
NSN 6130-01-323-7444
NSN 6240-01-433-5413
NSN 6105-00-519-0010
NSN 5920-01-147-5652
NSN 5935-01-154-7838
NSN 5990-00-293-6031
NSN 5990-00-948-0440
NSN 6610-00-453-2586
NSN 5999-01-085-6713