New, Hydraforce. A screw-in, cartridge-style, push- or pull-type hand pump with two built-in checks. The HP16-20 provides hydraulic flow to 21.3 cc (1.3 cu. in.) per stroke, at pressures to 96 bar (1500 psi).
Note: As with any mechanical hydraulic actuator (piston rods, rotating pump shaft, etc.) the shaft will become coated with a minute amount of oil from the internal high pressure system. The rod protruding from the hand pump may feel damp with oil after use. This is desirable because `the oil coating serves to lubricate the shaft seal, reducing friction and assuring extended seal life.