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 6240-00-329-9573
NSN 5985-01-242-1906
NSN 5920-00-147-7975
NSN 6150-01-153-0521
NSN 5960-01-224-7151
NSN 5935-00-100-0101
NSN 5925-01-238-9315
NSN 6220-00-951-6900
NSN 5910-00-155-4763
NSN 5945-01-097-0861
NSN 6610-01-527-2395
NSN 5998-01-145-0515