| Comment: | Makers of the Best Pressure Cookers in the world. The All-American Pressure Cookers/Canner feature an exclusive, precision machined "metal-to-metal" sealing system. Positive action clamping locks align the cover to the base, forming a steam-tight seal. At the same time, this metal-to-metal seal automatically permits venting under unusual pressure conditions, providing an extra margin of safety over conventional rubber or composition gasket cookers. |