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Home > Sealants and Caulks > Primers > PSI-690
Primers: PSI-690 Primer
PSI-690 is a single-component solution used as a primer to promote adhesion for PSI silicone sealants on non-porous substrates such as metal, glass, ceramics and certain plastics.
PSI-690 will also improve adhesion to wood, concrete and masonry surfaces where a non-staining primer is necessary.
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