Silquest A-172NT silane, vinyl tris (2 methoxy - ethoxy) silane, is a vinyl-functional coupling agent that promotes adhesion among unsaturated, polyester-type resins or crosslinked polyethylene resins orelastomers and inorganic substrates, including fiber glass, silica, silicates and many metal oxides. It improves bond of glass filament, adhesion of silcone and electrical properties.