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 5975-01-643-0186
NSN 5930-01-509-1287
NSN 5835-01-442-6482
NSN 5925-00-369-7747
NSN 6145-01-547-6651
NSN 6145-00-705-6686
NSN 5895-01-651-4662
NSN 6130-00-178-0716
NSN 6110-01-233-1135
NSN 5895-00-533-9639
NSN 6620-01-238-8666
NSN 6620-01-429-9115