piston rod seal 1. Ozone proof. 2. Flame resistant seal. 3. ... seal, medical rubber seal, etc.Description of Chemical Resistant Piston Rod Seal:1. Materials: CR, also can be NR, HNBR, ... have our mold factory, includes CNC machines, EDM machines, and wire cutting machine.2. The molds can be compression, injection and ... to visiting our company sincerely. Best Regards! Chemical Resistant Piston Rod Seal