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 6150-00-231-0249
NSN 5835-00-853-7785
NSN 5930-00-205-0136
NSN 5915-01-362-1588
NSN 5960-01-446-1266
NSN 6610-01-252-3640
NSN 5945-01-288-6294
NSN 5960-00-310-3844
NSN 5998-00-056-6626
NSN 6620-01-578-1984
NSN 5965-01-490-2547
NSN 5855-00-411-8688