The 2-1/2 casings are offered with wear pads on every size, except the
3 x 2 x 13 in. The wear pads can be easily changed by ordering replacement wear
pad repair kits, which come with a wear pad, studs, nuts, and a gasket. The 1-7/8
and the 1-1/8 pumps have wear surfaces integrated into their casing
designs.