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 6620-00-145-8232
NSN 7035-01-518-9610
NSN 2925-01-058-1718
NSN 5990-01-449-7090
NSN 5985-00-526-3469
NSN 5920-01-146-4503
NSN 5996-00-753-1599
NSN 5895-00-974-5100
NSN 5935-01-023-8282
NSN 5855-00-560-0110
NSN 5835-01-274-1035
NSN 5920-01-650-6510