Universal CouplingDN40 to D600PN10/16ADD TO LISTMaterials & Relevant Standards END RING : DUCTILE IRON GGG-50 BODY : CARBON STEEL / DUCTILE IRON GASKET : EPDM / NBR / SBR BOLTS & NUTS : CARBON STEEL / SS304 / SS316 COATING : EPOXY coating.