Material Safety Data Sheet Technical data sheets - Select a technical data sheet -P-U-30 Transparent adhesion promoterP-U-30 var sanding filler plasticsP-U-30 var wow plasticsP-U-30 var wow metal P-U-30 ProClass - undercoat solutions.Efficient filler - adhesion promoter. No sanding before topcoat or basecoat application; safe application; no overspray visible in door shuts as filler is transparent.