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 6130-01-413-9632
NSN 5975-01-325-4740
NSN 2925-00-211-4761
NSN 5975-00-083-1433
NSN 5835-01-432-1277
NSN 5855-01-199-2046
NSN 6620-01-310-6653
NSN 5920-00-981-5821
NSN 5975-01-634-0678
NSN 6130-01-595-6760
NSN 6150-01-576-9803
NSN 5925-01-446-1494