... sealant is mainly for sealing in glass, metal(except copper), concrete, marble, tile ,etc M-820 neutral weather resistant silicone ... , high modulus, no corrosion to the materials such as glass, coated glass, concrete, marble, metal, etc. Excellent adhesion to most ... silicone sealant. B . USESSealing for various curtain wall such as glass, aluminum and ceramics; Sealing for marble, granite , concrete, ...