Kraloy Expansion Joint, 1-1/2 in, For Use With: Rigid PVC Conduit, PVC, 2.23 in Dia x 13 in Kraloy couplings, terminal adapters and female adapters retain their original properties after years of exposure to heat and weather. Kraloy couplings, terminal adapters and female adapters resistance to fungi, bacterial action, rodents, termites and corrosive agents ensures a long, trouble free live for PVC conduit installed indoors or outdoors. Couplings and adapters are designed and engineered to be concrete tight in all weather conditions.