Please note this product is to be used with EasyFlash and Wakaflex. Properties Size: 310ml. Colour: Transparent. Optimal temperature: 5C to 40C. Storage: cool and dry place, protected from frost. Material: UV reistant, bitumen-friendly synthetic rubber (silicone free). Description The HP Flashing Sealant has been specially formulated to work with Rapid Flashing making it adhere very well to the surfaces. This is different to other sealant on the market, which can be used with EasyFlash and Wakaflex but generally do not stick well to its surface. It comes in a 310ml application tube that fits inside a standard caulking gun available from any merchant or DIY store.