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Sika-Flex 291 Marine Sealant-Adhesive is a non-sag, 1-component polyurethane sealant specifically designed for marine applications and cures on exposure to atmospheric moisture. This multipurpose sealant is designed to have a long open time for those jobs that require more time. This low-odor and non-corrosive formula can be sanded and over painted, and can be used either above or below the water line. Not to be used to seal plastics that are prone to stress cracking. This product is suitable for experienced professional users only.
