Rainbow Ral Coloured Silicone Sealants are a low modulus, neutral curing silicone sealant with excellent adhesion to many surfaces, including metal, plastic, brick and wood. Rainbow Coloured Silicone contains anti-mould properties ideal for kitchen, bathroom and sanitary uses. Rainbow Ral Silicone Sealant can be used indoors and outdoors, and is unaffected by water, sun and most weather conditions. It does not contract or crack, and it does not sweat. 300ml tube size.