Insulation gasket type
Type “E” is a full-face gasket with same outside diameter as the flange and precision cut bolt holes
This design facilitates proper alignment of the gasket during installation.
This assembly minimizes the ingress of conductive foreign matter between the portions of the flanges outside the raise face and reduces the risk of bridging.
Type “F” gasket are made to fit the raise face portion of the flange only.
As there are no bolt holes in the “F” gasket, the outside diameter of the gasket fit tightly into place assuring a well centered position.