For the material to be bonded with EPDM, there are many choices. The first one we recommond you is stainless steel.
Compare to carbon steel with Zinc, stainless steel offers a higher ability to bear corrosion and higher strength.
The SS material grade we provide are A2(304), A4(316), 2205 etc. Φ10~Φ50
If you want to save cost&time in the maintenance of roofing or plumbing, Stainless Steel EPDM bonded washer is the one you are looking for!
Contact us for more info. Any question is welcomed!