PR-187 is an adhesion promoter to enhance the coupling characteristics of polythioether compounds to a wide variety of substrates. This adhesion promoter is recommended when a PR-1800 polythioether sealant is to be applied over a polysulfide material.
PR-187 is a one-part compound suitable for application by brush or clean gauze. The material dries at room temperature in approximately 30 minutes.
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