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 2925-01-433-4374
NSN 6105-01-183-5509
NSN 5950-00-938-1391
NSN 5915-00-446-9136
NSN 6220-01-055-4874
NSN 5985-01-394-5373
NSN 6145-00-375-5224
NSN 6320-01-352-5653
NSN 5835-01-297-1909
NSN 5930-00-859-5278
NSN 6610-01-594-8428
NSN 5999-01-231-9633