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 6110-01-455-5252
NSN 2925-01-141-7563
NSN 6650-00-569-1762
NSN 6240-01-229-5712
NSN 5935-01-442-8356
NSN 5960-01-276-2828
NSN 5920-00-533-8024
NSN 5998-01-104-3072
NSN 6240-01-065-7551
NSN 5895-01-429-2082
NSN 5960-00-201-5265
NSN 5965-01-243-5494