This line of MARZOLF? Two-Piece Flanges is designed to replace cracked or broken PVC and CPVC Van Stone flanges. Just like the with steel piping, MARZOLF? Two-Piece Replacement Flanges save money and reduce down time by eliminating the need to cut and re-glue plastic piping when installing or replacing PVC or CPVC lap joint flanges. These rings are available with different corrosion resistant coatings including Zinc Electro Plate and E-Coat Epoxy. These rings can also be made of PVC, CPVC, T-340L stainless steel, T-316L stainless steel, and polypropylene.