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 5930-01-055-8133
NSN 5985-00-161-2723
NSN 6320-01-116-3980
NSN 5950-00-905-6887
NSN 5855-01-179-8887
NSN 5855-01-534-5908
NSN 5905-00-827-3921
NSN 6320-00-405-2348
NSN 6130-01-634-0603
NSN 5998-00-814-8394
NSN 5895-01-202-3797
NSN 5920-01-270-7795