3M™ Tamper Evident Label Material 7380 is on a 2.3 mil, matte white, VOID, polyester tamper-indicating facestock with 1.0 mil 3M™ Acrylic Adhesive 300 on a 55 pound, densified kraft liner. 3M™ Tamper Evident Label Material 7380 has a durable polyester facestock that resists harsh environments. A gloss top coat offers excellent abrasion and chemical resistance, and a tight void pattern allows for small labels and excellent initial adhesion to low surface energy substrates. These materials feature a 55 pound, densified kraft liner that provides consistent die-cutting. 3M™ Performance Labels offer a wide range of products for long term durability and adhesion with automotive chemical resistance and outdoor durability. Some products can be printed by flexographic or screen print processes, as well as thermal transfer, digital printing, inkjet, laser or dot matrix printing. 3M™ Performance Labels are available with a variety of facestocks, including polyester, polypropylene, vinyl, pharmaceutical papers or synthetics. Please refer to individual product data page for specific product details.