... , axial flex and etc.2. According to different material requirement, product could be made as acid proof, corrosion proof ... manufacture accordingly. Rubber material may be selected according t your requirement.Flange standard: ANSI, DIN, JIS, GB or othersRubber: NR ... , PN10, PN16, PN25Temperature: -15~1150 CPlease contact with us if you have any inquiries of them.Best regards,Henry Union rubber joint