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 6240-00-400-7980
NSN 6150-01-368-9245
NSN 6620-01-234-1799
NSN 5990-01-443-2931
NSN 5975-01-027-0253
NSN 6145-01-406-3387
NSN 6145-01-204-0051
NSN 5975-01-126-0180
NSN 5975-01-413-5239
NSN 5960-00-269-4762
NSN 6145-01-321-0610
NSN 5950-00-199-7652