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 5960-00-726-0161
NSN 6240-00-832-6867
NSN 4140-01-406-0541
NSN 7035-00-803-3056
NSN 5935-01-207-6740
NSN 6620-01-282-6446
NSN 6240-00-559-3625
NSN 6320-01-145-1503
NSN 5910-01-237-6851
NSN 6240-00-468-7089
NSN 5945-01-083-5029
NSN 6135-01-048-0910