With the black Soudal Silirub ws neutral silicone sealant, you create a durable, weather-resistant seal across facade and glazing joints. Thanks to its permanently elastic formulation, it reliably accommodates thermal expansion and structural movements in curtain walls, cladding, and window frames without tearing. The neutral cure formula provides strong adhesion to glass, laminated glass, coated aluminium, concrete, and masonry while protecting sensitive surfaces. It also offers outstanding resistance against uv radiation, rain, frost, and extreme temperatures ranging from -60 °C to 180 °C. This 600 ml foil sausage pack delivers efficient application across large commercial jobs.