LAM PVDF-S | FM 4910 Listed Polyvinylidene Fluoride Sheet Based On Solef® Resin LAM PVDF-S sheet is manufactured from Solvay’s Solef® polyvinylidene fluoride resin. FM 4910 Listed and suitable for wetted parts in semiconductor process applications, it sees widespread use in systems using concentrated acids and ultra-pure water. The material offers corrosion and chemical resistance at both ambient and elevated temperatures. It is inherently UV stable, mechanically tough and abrasion resistant. LAM PVDF-S can be welded to LAM CRP-1, a PVC based FM 4910 rated sheet, using our proprietary JSR welding rod.