Nippon VT-621 is a versatile MS Polymer sealant designed for general bonding and sealing in both construction and automotive applications. It balances high bond strength with excellent flexibility. Offering primerless adhesion to a wide range of substrates—including metal, plastic, wood, and concrete—VT-621 is a go-to solution for mixed-material assemblies. It is weather-resistant, solvent-free, and can be applied in damp conditions.