3M™ Polyester Film Tape 8403 is a translucent green with a silicone adhesive for composite bonding and splicing of many silicone coated papers and film. Applications include masking edges overlap seams in metal bonding process where the excess epoxy flows onto the tape. Clean up is complete when the tape is removed. Mask for metal in acid or caustic chemical milling baths. Masking parts in anodising processes. Splicing of silicone coated papers and films. Paint masking of materials subjected to high temperatures. Protective overall mask on panels to mild caustic or acid bath etching. Helps prevent scratches during handling and provides desired masking during metal bonding and fabrication.