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 5945-01-406-5910
NSN 5930-00-906-0699
NSN 5930-01-372-0616
NSN 6105-00-171-6521
NSN 5835-01-346-1386
NSN 6650-01-420-6572
NSN 6240-01-149-4861
NSN 5935-00-619-3666
NSN 5930-00-175-4699
NSN 5855-00-928-1912
NSN 6645-00-283-6794
NSN 6240-01-459-2478