Covalence Adhesives Corrosion Protection Group: Polyken 4000 PCS is a new cold-applied primerless coating system for the corrosion protection of joints, fittings and specialty piping. The system does not emit volatile organic compounds (VOCs) and does not require a primer or liquid adhesive. It reportedly has a high tack butyl rubber adhesive that is designed for initial adhesion, even in cold weather. It can be applied to a wire-brushed or sandblasted pipe surface.

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