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 5990-01-171-3547
NSN 5910-01-322-4904
NSN 6240-01-158-5664
NSN 6220-01-225-1876
NSN 6240-00-235-5159
NSN 4140-00-062-1335
NSN 5835-01-362-8367
NSN 2925-00-422-5159
NSN 6105-00-643-4975
NSN 5998-01-403-2586
NSN 5950-01-127-9291
NSN 6105-00-473-6143