Silicone sealant: 1)Can bond to alumium and TPT/TPE strongly. 2)The color is not changed under the sun light and the rain. PT1518 Silicone sealant for solar panel It is a one-component room temperature curing silicone rubber (solar panels, special plastic), can improve the reliability of sensitive circuits and components to extend service life. Insulation, shock absorption, impact resistance, ...