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 5990-01-355-4694
NSN 6620-01-431-9176
NSN 4140-00-872-6316
NSN 7035-01-080-8742
NSN 5935-00-009-3084
NSN 5905-01-634-0595
NSN 6105-01-466-2928
NSN 5998-01-245-4791
NSN 6150-01-189-8556
NSN 5935-01-595-4311
NSN 5895-01-219-1097
NSN 4140-00-134-9941