Taiken SR Super Silicone It is a high performance non-volatile, acid vapor silicone sealant that has passed ASTM C920, Class 25, Type S, Grade NS, Class 25, Use NT, G, A, tested for antifungal performance in accordance with ASTM G21 test method. (Class 0) Tested for antibacterial efficacy according to JIS Z 2801 test method (>99.9%) and tested for antibacterial efficacy according to test method TCID50 (99.86%), making it suitable for sealing joints. Areas that want to prevent various germs on the grout surface Especially in areas with high humidity, such as bathrooms, shower rooms, bathtubs, washbasins, spas, ceramic tiles, sanitary ware, washing areas, sinks, and cold room walls. It is also tested at -40°C and 200°C and has been tested for flammability in accordance with UL 94 HB test method.