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 6145-00-130-8078
NSN 5935-01-322-9392
NSN 5950-01-364-4902
NSN 5990-00-801-7923
NSN 5935-01-283-8201
NSN 5895-00-707-6663
NSN 4140-01-336-3626
NSN 5960-00-972-8990
NSN 5945-01-563-0784
NSN 6240-01-150-2712
NSN 5999-01-223-0831
NSN 5975-00-258-7396