TEROSON® UP 130 is a 2-part (dark grey [part A] and red [part B]), unsaturated polyester body filler for general repair work. It's typically used for petrol tanks, radiators, concrete, housings and castings and many other applications. It is compatible with an array of substrates - such as steel, aluminium, galvanised surfaces, glass fibre, copper and tin - and is resistant to water, salt water, oil, fuel and most weak acids and chemicals.