piston rod seal 1. Ozone proof. 2. Flame resistant seal. ... , medical rubber seal, etc.Description of Chemical Resistant Piston Rod Seal:1. Materials: CR, also can be NR, HNBR ... : weather resistant, flame resistant, oil proof, chemical resistant, high tensile strength, aging resistant, ozone proof, heat resistant, flame resistant, ... our company sincerely. Best Regards! Chemical Resistant Piston Rod Seal