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 5960-00-418-3588
NSN 6240-01-186-6448
NSN 6620-01-604-4072
NSN 5945-01-270-4063
NSN 5925-00-681-6089
NSN 7035-01-369-1445
NSN 5930-00-786-5675
NSN 6150-01-238-0322
NSN 2925-01-465-3437
NSN 4140-01-446-6832
NSN 2925-00-934-8383
NSN 6105-01-360-5629