Cost effective, Hi Temp, EPDM rubber, polyester reinforced and exceeds SAE J20R3. Both are resistant to coolants, ozone, cold & heat; and serve a variety of boat and plant pressurized application (water & air delivery) #134 has 4 spiral, heavy wall and better bend radius and working pressure. 300 PSI (2.1Mpa) W.P. Operating Temp. -40°F to 212°F (-40°C to 100°C) #134 serves below water line intake and discharge applications (A/C, Eng, Sani) etc.