This Everbuild Silicone 825 offers approximately 35 percent flexibility and is ideal for expansion joints. It features a neutral cure and conforms to ISO 11600 Class: F25LM and G25LM standards. Suitable for both interior and exterior use. It is typically applied for expansion joints on stone, brick, concrete, and composite panels. Also used for perimeter pointing on window and door frames, weatherproof sealing for most external applications, and in construction and dilation joints where stress does not occur until fully cured. This is the 380ml Buff variant.