EM Caulk Flex, Electrically Conductive and Flexible Acrylic Latex Caulk for SCIFEMCAULK FLEX is a versatile, high performance sealant engineered to deliver electrical continuity, flexibility, and dependable EMI protection across a wide range of applications. Its phthalate free formula adheres to many common building materials and forms a tough, airtight, and water resistant seal that helps protect against environmental exposure. The cured bead remains flexible, resists mildew, and maintains long term durability in both interior