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 5996-00-231-9322
NSN 5996-01-012-0972
NSN 5935-01-588-2112
NSN 5930-01-077-2692
NSN 5925-01-324-5260
NSN 5930-01-432-0322
NSN 6110-01-288-2482
NSN 6320-01-504-3948
NSN 5915-01-422-2014
NSN 6220-01-196-0332
NSN 5990-01-294-6198
NSN 5930-00-850-1701