It is of urgent necessity for our country to develop the application technologies of recyclable materials, as one of counter measures to cope with the global environment. In the past, weatherstrips have been made from EPDM rubber and it was basically impossible to recycle them to re-use for as weatherstrips.Now, we have developed recyclable foamed weatherstrips using thermoplastic olefinic elastomer (TPO). This weatherstrips have better properties than existing EPDM rubber products in heat resistance and compression set, and also durability has much improved. Also, as it does not require the compounding process and vulcanization process, a certain cost down is achieved.