They are not hard to pry out. Be careful not to damage the housing. Be sure there are no sharp edges around the shear pin hole that could damage the new seal. If you had access to a lathe you could turn down the damaged part and press on a sleeve to be turned down to standard size. Pressing in the new seal only requires it be square with the hole. Easily done with a length af PVC pipe the size of the outside diameter of the seal. . . . 😉
