Polycorp will unconditionally guarantee that EPFLEX Railseal Interface will effectively perform for the life of the grade crossing and will be completely reuseable as an interface in a second crossing rehabilitation. When installed in accordance with the manufacturer's recommended installation procedures, the material is guaranteed to perform as designed. If at the end of the grade crossing life, the interface is not reusable, Polycorp will replace all or part of worn or defective materials at no charge.