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 5975-01-278-6576
NSN 5910-01-408-4622
NSN 6620-01-462-0001
NSN 2925-00-614-1758
NSN 5945-00-185-6609
NSN 5965-01-544-1135
NSN 6320-01-132-2746
NSN 5998-01-367-5775
NSN 5935-00-008-2008
NSN 6150-01-263-5754
NSN 5960-01-227-5245
NSN 6105-01-512-4105