The plastic seal strip is usually PVC or polyurethane.PVC materials have the characteristics of corrosion resistance, abrasion resistance, acid and alkali resistance and various chemical media, which are resistant to combustion and high mechanical strength.Polyurethane material and the mother of strong adhesion, can be used as required to flexibly adjust its cross section, size or physical properties, hardness, etc., the raw material source is reliable, the product quality is stable, the production method is simple.