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 5960-00-261-6512
NSN 5855-01-052-0353
NSN 5925-01-179-4774
NSN 7035-00-392-5417
NSN 5999-01-109-1877
NSN 5935-01-267-1340
NSN 5975-01-062-5650
NSN 5835-00-816-0394
NSN 5945-00-654-3804
NSN 5835-00-953-4061
NSN 5930-01-474-5487
NSN 6620-01-115-2926