AMEEN ENTERPRISES- SINCE 1985- EVERYTHING IN PACKING MATERILAS AND TOOLS About this item Polyester films offer excellent thermal, abrasion, and chemical resistance while maintaining their flexibility. Holding silicone or silicone treated parts. Composite bonding – sticks well to molds treated with release agent, works as a flash breaker tape on removal of part from mold, seals vacuum bags if vacuum bag treatment is part of the process. Masking edges of overlap seams in metal bonding process where excess adhesive flows onto tape. Minimizes clean-up on tape removal. Best for Jointing Flex