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 6320-00-284-1524
NSN 5998-01-152-1221
NSN 5990-01-591-8797
NSN 6105-01-318-2513
NSN 6645-01-158-3592
NSN 4140-01-237-5799
NSN 4140-00-381-4563
NSN 5965-00-716-7078
NSN 5930-01-557-6989
NSN 5905-01-013-8937
NSN 5960-01-495-0859
NSN 5935-01-239-4272