The Siroflex SX Handheld PU Expanding Foam is a versatile and effective solution for filling and insulating various surfaces. With a volume of 500ml, this expanding foam is made from polyurethane (PU) and has a drying time of just 1 hour. It is suitable for a range of DIY projects, providing a reliable and efficient way to seal, insulate, and protect different types of materials in your home or furniture. The handheld design makes it convenient to use, ensuring a hassle-free application for all your filling and fixing needs.