0.00 LBS

DOWTHERM SR-1 Ethylene Glycol Heat Transfer Fluid

DOWTHERM SR-1 Concentrate in pails is an ethylene glycol-based heat transfer fluid that is widely used for secondary cooling and heating applications, for freeze and burst protection of pipes, and for various deicing, defrosting, and dehumidifying applications. DOWTHERM SR-1 Concentrate in pails contains specially formulated packages of industrial inhibitors that help prevent corrosion. Due to ethylene glycol's less viscous properties compared to propylene glycol, they generally provide superior heat transfer efficiency and better low temperature performance and are preferred for most heat transfer applications. In applications where toxicity is a concern, propylene glycol fluids are used because of their low acute oral toxicity vs. the moderate toxicity of ethylene glycols. 

Operating Range 

-60 deg F to 250 deg F (-51 deg C to 121 deg C) 


  • HVAC system freeze/burst/corrosion protection 
  • Ice skating rinks 
  • Air preheating 
  • Packaging carbonated beverages 
  • Fermentation cooling 
  • Refrigeration coil defrosting 
  • Cold room dehumidifying 
  • Conveyor roller defrosting 
  • Process cooling 
  • Process heating 
  • Waste heat recovery 

11 Reviews | Write a Review.

  • 5

    Posted by John T on Jan 14 2021

    Was very easy to oder

  • 5
    Great Product

    Posted by N/A on Dec 16 2020

    This product works perfectly and has saved us tons of money since switching from a competitor. Fast shipping as well!

  • 5
    Great Product!

    Posted by Dave Carlsen on Nov 11 2020

    I wouldn't use anything else.

  • 5
    Excellent service and quick shipping

    Posted by Rick on Jul 24 2019

    We ordered our Dowtherm SR-1 on Tuesday and had it Wednesday. Great customer service and product is exactly as described.

  • 5
    Easy Purchase and quick shipping!

    Posted by None on May 02 2019

    I am very happy with my purchase from PSC. I tried ordering from a company that I had ordered from before, but they would no longer sell to me because of my distance from them. When I called PSC, they were more than happy to allow my purchase, very professional and helpful, and the shipping was quick. I will stick with them in the future, no doubt about it!

  • 5

    Posted by None on Apr 01 2019

    Over all excellent service.

  • 5
    PSC outstanding service!

    Posted by none on Aug 01 2017

    Excellent service, shippment was received very quick, look forward to doing more business with!

  • 5
    Perfect coolant for our application

    Posted by Mike on Jul 06 2017

    Dowtherm SR-1 is the perfect thermal transfer fluid for our application. Very easy to mix. Stable, long lasting product in semi-closed loop coolant systems.

  • 5
    Great Customer Service and Product

    Posted by Scott on May 18 2017

    Received the product and used immediately, was quick shipping and easy to deal with, they will be getting all my future business!

  • 5
    Great customer service and support

    Posted by None on Oct 27 2016

    I give PSC a 5 star rating. They answered any questions I had as well as shipped our order the next day. I would recommend PSC to any company looking for fluid needs.

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Product Data Sheet
Safety Data Sheet
Dowtherm Operation Manual

Due to these products being hazardous, an additional shipping charge of $25.00 is automatically added to smaller "Ground Shipments". If you can order any combination of products that makes your total cart weight over 150 lbs. (which is considered "Freight Shipment"), this additional fee is waived. This can equate to considerable savings on shipping.

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