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 5855-01-355-8729
NSN 5999-01-371-9168
NSN 5990-00-594-7291
NSN 5999-00-811-0845
NSN 6320-01-459-6992
NSN 6645-01-289-6298
NSN 6650-01-423-8131
NSN 5985-01-343-2281
NSN 5915-01-621-5104
NSN 5998-01-633-1271
NSN 5996-01-068-4469
NSN 5935-01-434-5785