Weldon 10213 Clear P-68 Primer For Pvc And Cpvc Pipes Non-Bodied Fast Acting Primer, 1/2 pint, Clear The strong action of P-68 primer rapidly softens and dissolves the joining surfaces of PVC and CPVC pipe and fittings Low VOC emission, Non-Bodied, Fast Acting Primer The main function of the primer is to expedite the penetration and softening of the surfaces P-68 is suitable for use with all types, classes and schedules of PVC and CPVC pipe and fittings