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 6150-00-014-1683
NSN 6620-01-104-2699
NSN 5935-00-225-8448
NSN 5945-00-726-3065
NSN 6150-01-291-5381
NSN 5950-01-429-8956
NSN 7035-01-624-5521
NSN 5985-00-379-2345
NSN 5835-01-581-1957
NSN 6150-01-058-0575
NSN 5935-01-256-8106
NSN 6620-01-150-9400