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 6240-01-114-6349
NSN 6240-01-028-0987
NSN 5950-01-239-0566
NSN 5915-01-144-4512
NSN 5960-01-399-4327
NSN 5915-00-711-9829
NSN 5920-00-497-1916
NSN 6645-01-210-5649
NSN 5998-01-394-6111
NSN 5915-01-283-5923
NSN 5985-00-724-4897
NSN 5835-01-392-7683