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 5920-01-525-6933
NSN 6320-00-823-2015
NSN 5855-01-510-9416
NSN 5915-01-516-8410
NSN 6110-01-144-2832
NSN 6150-01-650-1898
NSN 6105-01-271-2248
NSN 6130-01-490-0842
NSN 6620-00-186-8220
NSN 6620-01-033-7566
NSN 5935-00-116-2712
NSN 5985-00-590-7980