Primers and SealersSign-makers, printers, and graphics artists use 3M's Tape Primer 94 to promote graphics adhesion, and 3M's Edge Sealer 3950 to protect graphics. Both of these products are clear liquids. Tape Primer 94 is applied to a substrate, then Graphics are applied over the Primer, which secures them to the substrate. Possible substrates could be ... PolyethylenePolypropyleneABSPET/PTB blendConcreteWoodGlassMetalPainted metal surface Edge Sealer 3950 is used with graphics to minimize the effects of rigorous use or extreme environmental exposure. It does this by providing a tight seal between the graphic film and the substrate to which the graphic is applied. To learn more about our Primers and Sealers, contact FDC Graphic Films. We’d love the opportunity to serve you and demonstrate why we’re known for Service, Selection, and Reliability. Remember: we don’t demand a minimum order from you, and we deliver quickly with no hassles and no upcharges.