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Excellent Adhesion to a Variety of Clean Surfaces
Superior Exterior Weathering Properties
Easy to Apply and Tool Sealant Estimator Chart
CRL 777 Butyl Rubber is a unique, butyl-based sealant specially formulated using a blend of age resistant polymers to give excellent weathering properties at various temperature extremes. CRL 777 offers excellent adhesion to most clean surfaces, and will withstand joint movement of ± 10% without affecting its water-tightness. It also has a special ultraviolet fighting agent for exceptional service life.