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 5935-00-952-1720
NSN 6645-01-142-2416
NSN 5835-00-523-0736
NSN 4140-01-144-7711
NSN 5925-01-274-4941
NSN 5935-00-959-5668
NSN 6685-00-148-9729
NSN 5915-00-062-3054
NSN 5990-00-416-9831
NSN 5935-01-467-6376
NSN 5985-01-524-4512
NSN 6135-01-034-2239