Coloured NBR Fuel Pump Diaphragm Rubber 70 , Waterproof Diaphragm High Intensity Description : 1. Long lifespan, continuous operation can reach tens of thousands of hours; 2. Good fatigue resistance, high intensity, small elastic changes, can be used for high flow and high pressure requirements; 3. Excellent elasticity, low noise; 4. Hardness adjustable according to customer requirements from 40-65 degrees; 5. Temperature range from -40~150C; 6. Applies to all the micro air