3M™ Scotchcal™ Gloss Overlaminate 8508 is our transparent, glossy, cast overlaminate (60 µm) with permanent adhesive that guards digitally printed promotional graphics from moisture, abrasion, and UV light. Durability up to 6 years. Get effective protection for digitally printed promotional graphics with 3M™ Scotchcal™ Gloss Overlaminate 8508. Our transparent, cast overlaminate (60 µm) guards printed graphics from moisture, abrasion and UV light with effective durability for up to 6 years. It’s an economical choice for digitally printed promotional graphics that require a gloss finish, ideal for use with 3M’s portfolio of intermediate print films. This self-adhesive film uses a permanent, pressure-sensitive adhesive which makes it flexible and conformable, designed for use on both flat surfaces and simple curves.