Moderate strength glass scrim and conformable PET film coated with an aggressive acrylic adhesive for a variety of heavy duty insulating, banding and holding applications. The 1.0 mil (25μ) polyester film provides puncture, edge tear and abrasion resistance. 4240 is specially designed and intended for use in oil-filled transformers. Once thermoset, the acrylic adhesive offers superior resistance to chemicals, solvents, and aging in addition to excellent dielectric strength and insulation resistance