Reliable Polymer Industries supplies PVDF Coating. Reliable Polymer Industries offers PTFE coated studs, bolts and nuts, high tensile alloy fasteners, etc. The PVDF Coating [polyvinylidene fluoride] is a chemical resistant thick film barrier coating primarily used on chemical processing equipment. This coating is unaffected by most chemicals and solvents and has high wear and abrasion resistance. PVDF coating also has a high dielectric strength, excellent resistance to weathering and the ability to self extinguish.