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 6130-01-317-5888
NSN 5920-00-710-2781
NSN 5925-01-277-4374
NSN 7035-01-555-8793
NSN 6645-00-960-6594
NSN 6150-01-142-8947
NSN 5999-01-434-9005
NSN 5930-01-634-0659
NSN 5935-01-441-8753
NSN 5895-00-239-9138
NSN 6650-00-264-0664
NSN 5935-00-689-5788