Backer Rod

Backer rods are made of polyethelene resion with additive through the processes of physical foaming and extrusion. The enclosed-hole foams are fillings specially designed for buildings(at different types of curtain walls, doors, windows specially lighting roofs), aluminum alloy guesset plates. It can maintain the coimbined shape of sealing rubber and prevent the thress sides from sticking and stress from being formed at the seal rubber. Then it can enhance the performances of the sealing rubber. Specification Diameter from 1mm to 12 mm. Colour Black and White Any customer's drawings and samples are welcomed