0.5 mil polyester (PET) film coated on both sides with pressure-sensitive acrylic adhesive. DBL Y4950 provides exceptional shear strength, good adhesion and very high initial tack allowing immediate/permanent bond to a variety of surfaces (including irregular, porous and LSE surfaces). Offers excellent resistance to plasticizer migration, solvents, chemicals, and U.V. light. Features an easy release 3 mil MOPP film liner (red).