Therminol 44 is also known as Therminol VP-1 or Dowtherm A and is a high temperature heat transfer fluid used in a range of applications, such as air conditioning, chemical processing and manufacturing. When rubber is exposed to Therminol 44, it is susceptible to swelling and cracking, which can greatly reduce its durability and strength. Additionally, oxidation, which can cause cracking in the rubber over time, may be accelerated when exposed to the chemical.
Viton ® o-rings from Marco Rubber offer excellent compatibility with a range of chemicals, oils and resist high temperatures up to 400F. Viton ® is also known as FKM made of fluoroelastomer one of the most versatile and widely used sealing materials.
View some of our other material compatibility ratings with THERMINOL 55. If you don't see what you're looking for or need more guidance, our team of experienced sealing design engineers can help select the best sealing products and material for your specific application.View Full Chemical Compatibility Guide