Hydraulic Cylinder, also known as the Low Pressure Cylinder, lasts an extremely long time, especially with the H2O Jet Hi-Load piston, the hydraulic piston with 3 bands - 2 for guidance and 1 in the center for sealing.
NOTE: The 190008-2 is for 2 RARE intensifiers: an early Flow model called the "Long Block" and the special, oversized H2O Jet "High Flow" 1.5gpm intensifier.