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Engineered to provide electrical continuity, high flexibility, and excellent long-term EMI protection in a wide range of applications. EMCAULK FLEX is a quality sealant that is phthalate-free and can be used on a wide variety of interior and exterior surfaces. Forms a highly flexible, durable, airtight, water-resistant seal that offers protection from environmental conditions. Once cured, the bead is mildew resistant and exceeds the requirements of ASTM C-834 type P, Grade -18° C. Designed to seal gaps, cracks, joints, and seams around windows, trim, doors, siding, penetrations, hardboard and flashing. EMCAULK FLEX features soap and water clean-up and may be painted when cured. Performance Characteristics: Exceeds ASTM C-834, Type P, Grade -18°C Fills up to 1/2” gaps in joints Cured bead is mildew resistant Soap and water cleanup VOC < 1.5%, Low odor Phthalate Free Formulation Water and UV resistant seal Paintable Interior or exterior use