“What We Do”

your mobile hydraulics one-stop

                                      what do we do?

Tyler Merth designing a new THERMAFLOW®
STAC, Inc's THERMAFLOW hydraulic oil coolers are the heart and soul of your specially designed wet kits

We are the "most trusted hydraulic resource in the mobile transportation industry". For 35 years we have been specializing in mobile hydraulics. In fact, unlike other companies in the industry, 100% of our time is focused on hydraulics. It's all we do!

Not only are we the manufacturers of the industry premium, THERMAFLOW® hydraulic systems ( wet kits ), we are also a hydraulic service provider. We design custom hydraulic systems, hydraulic wet kits and hydraulic coolers, as well as distribute hydraulic components for the mobile transportation industry.

Let us deal with the hard stuff!

No more guessing, no more trial and error, no more researching...let US build all of your wet kits, stress free! All you need to do is provide us with your system info and our team of certified fluid power specialists will custom design your wet kits to best fit your specific needs! We exist to be YOUR hydraulics solution provider, and to be your overall hydraulics one-stop. No matter the combination of components or truck type, STAC has you covered.

  • Crude Trucks
  • Water Trucks
  • Sand Trucks
  • Chemical Transports
  • Well Primers
  • & More!

We take your concerns, questions, and needs with the utmost attention and importance. Our top management is only a phone call away, contact us today for any question you may have regarding our THERMAFLOW hydraulic oil coolers for trucks, our custom designing of wet kits and purchasing of mobile hydraulic components!

STOP fighting with your system and START your partnership with STAC, Inc TODAY!



we have the solutions for your specific hydraulic needs

As a child of a former midwest parts and service company (CATCO Parts & Service), we have the knowledge and experience to confidently consider ourselves as the premier mobile hydraulics company in North America. Our certified fluid power specialists have been designing mobile hydraulic systems since the early 80's, as well as manufacturing the highly successful THERMAFLOW Hydraulic Oil Coolers, since the early 90's.

Have a question about pumps, motors, PTOs, hoses, filtration or cooling needs? We've got your answer! Looking to convert your outdated, mechanical drive to a hydraulic drive and don't know where to start? We can help! Want the know which hydraulic components will give your vehicle the smoothest running system? We can build that! Contact us anytime for your specific hydraulic needs!



Jay building an SS675HR

thermaflow hydraulic systems


Since the early 1990's, STAC, Inc. has been designing and manufacturing the highly successful line of THERMAFLOW® hydraulic systems. Today, we have THERMAFLOWS designed to fit every vehicle type, hauling any kind of product.  We even have 2 THERMAFLOWS that are patented for the propane bobtail industry. For any questions regarding our THERMAFLOWS, contact us at...