Most intricate profile can also be molded at any angle by injection molding to suit individual requirements where the bending radius is too small.
The most leak-susceptible area in any gasketetry system is at the Corners. It is a standard practice to provide some type of corner treatment to attain an acceptable level of weather tightness.
When a glazing system includes extruded gasket, the corners on the exterior side of the lite are treated to effectively create a continuous gasket around the entire preimeter of the lite. Treating the corners on the interior side of the lite is often desirable.