For the standard seals type, FKM can tolerate 200℃, but NBR not exceed 90℃. HNBR have the best cold resistance -30~-40℃ and heat-resistant up to 150℃. EPDM has similar temperature range with NBR, but it can withstand ozone resistance. It is good to be used as bicycle shock absorber. Different materials costs can be 4~8 times. Please ask for oil seals design form from TCS sales team, so that RD department can suggest you suitable material.