The largest of the SC "standard" series pumps with a 7" diameter air cylinder and a 2 1/2" stroke. 13 ratios available with the highest ratio capable of hydraulic pressures up to 73,000 psig. Commonly used where very high pressures are required at low flows. Applications include proof and burst testing to extreme high pressures, torque wrench actuation, bolt tensioning, aircraft jacks, filter presses, clamping, holding, metal forming. 10-6 is used extensively by offshore oil companies in many applications due to the pumps inherent ruggedness and reliability. The D-6 has the same characteristics including a Non Lubricated feature.