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Profile XB57 is an external face U-Cup seal designed to work on SAE flanges. It provides a high degree of deflection over the contact faces due to the U-shaped grove in the seal face and being activated by system pressure.

It is preferred in circumstances where the flange faces may part under system pressure, if this is not a concern, we recommend the use of our XB59 profile for increased leak-free operation.

It is commonly supplied in one of our high-performance polyurethane materials but can be manufactured in rubber materials for increased chemical and temperature resistance where required. We can manufacture this seal to suit non-standard sizes and include anti-extrusion devices if the application pressure requires.