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 6135-00-112-8637
NSN 6130-00-450-1797
NSN 5930-01-461-3932
NSN 6650-01-101-9023
NSN 4140-00-195-7336
NSN 5990-01-632-0969
NSN 5905-01-179-2838
NSN 6320-01-103-6218
NSN 5855-01-398-0090
NSN 5950-01-525-7896
NSN 6320-01-274-8886
NSN 6320-01-643-0850