... SGS standard 2)Factory for Air bulb 3)OEM of Air bulb 4)Delivery time:7 days Silicone suction bulb Material NBR, NR, EPDM, FKM ... drilled or punched holes for wiring, cable, tubing, piping, hoses, air lines, rope and more. Used in appliances, motors, tools, cars ... material. See Material Performance Data for specific information. Silicone suction bulb