... One-component, moisture curing PU foam, For most substrates Acoustic insulation Water proof,anti-vibration/freezing PU foamDescriptionPU foam is a kind ... opening, engineering hole ande various cracksCharacteristic1. Thermal insulation, heat insulation2. Acoustic insulation, gas insulation, water-proof3.Anti-freezing, anti-vibration and ... granted for “Guangdong Top Brand”. Eco friendly Expanding PU Foam