Uniform compression seal adaptor

The present invention relates to a seal for use with a stroking universal joint bellows. A seal adaptor assembly for use in a stroking universal joint of the type having an outer drive housing member having an exterior wall of non-uniform dimension including spaces between the parts of the housing enclosing the drive channels. The seal adaptor assembly includes an annular body and a plurality of insert having greater rigidity than the material of the annular body and wherein the inserts are located in the annular body at sections thereof that are located within outer housing spaces between the drive channels. The inserts are supported within the annular body at thin wall sections thereof and thereby provide for a more uniform compression of a resilient seal member between the housing and a clamp for holding the resilient seal member in place on the housing.