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 6620-00-456-0404
NSN 5996-01-152-2948
NSN 5990-01-116-2181
NSN 5935-00-914-0670
NSN 5935-01-195-3724
NSN 5935-01-105-3568
NSN 5998-01-345-9899
NSN 5930-01-465-1056
NSN 6320-01-399-6177
NSN 5960-00-147-0519
NSN 6320-01-181-9474
NSN 6220-00-101-8799