... sealant is mainly for sealing in glass, metal(except copper), concrete, marble, tile ,etc M-820 neutral weather resistant silicone ... grey, white and other colors as customers request; Packing : M-820 packed in 310ml cartridge ( net weight: 300ml ). D .STANDARDGB/T ... /ml0.95-4Tack-Free timemin 35GB/T 134775Hardening speed,In 24 hoursmmGenerally3,depending on moisture and temperature -6Tensile strength ...