Aofeng Foam Sealant Offers Ideal Insulation, Soundproofing, Moisture Resistance, Dustproofing, Insulation, And Bonding Effects. The Foam Have Good Elasticity, High Strength, Are Non-Toxic, And Can Be Cut, Shaped, And Sprayed At Will. It Can Be Widely Used For Filling And Bonding Sealing In Building Doors And Windows, Building Cavities, Expansion Joints, And Other Purposes.