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 5960-00-413-0893
NSN 6240-00-456-2578
NSN 5996-01-459-3036
NSN 7035-01-150-6303
NSN 5945-00-253-4568
NSN 5998-00-088-5912
NSN 5910-01-543-0039
NSN 5999-00-758-7833
NSN 6150-01-375-5869
NSN 5835-00-642-8148
NSN 5930-00-946-8046
NSN 5999-01-433-4679