Features and benefits Highly flexible, non-staining paintable joint sealant with excellent recovery. Properties Highly resilient with excellent recovery characteristics Provides permanent and uniform watertight seal Excellent adhesion to most building substrates. Non-toxic. Can be used in potable water reservoirs and swimming pools Easy to apply, one component sealant. No mixing required Overpainting can be done (Rigid paints may crack) Description "POLYBIT® Polyseal 1PU is a one part low modulus high performance polyurethane sealant, which cures on absorption of atmospheric moisture to form a firm and flexible rubber watertight seal for moderate movement and control joints. Polyseal 1PU can be used in both horizontal and vertical applications. The sealant has a Movement Accomodation Factor (MAF) of ±25%."