JEFFCOOL® ISF-25 & ISF-55 Industrial Heat Transfer Fluids

Third Coast Chemicals is a trusted manufacturer and distributor of inhibited propylene glycol-based heat transfer fluids in the JEFFCOOL® ISF Series, including ISF-25 and ISF-55. Engineered for critical industrial and technological cooling applications, these fluids deliver reliable thermal management and corrosion protection in closed-loop systems, data centers, HVAC, and other industrial environments.

Each JEFFCOOL® ISF Series product—from ISF-25 to ISF-55—offers:

  • Reliable freeze and thermal protection for critical systems
  • Advanced corrosion inhibitors to safeguard metals like copper, brass, titanium, and stainless steel
  • Antifoam additives to maintain smooth flow and optimal heat transfer
  • Compatibility with common elastomers and plastics used in high-performance cooling applications

From liquid-cooled server systems and data centers to industrial manufacturing and aerospace applications, the JEFFCOOL® ISF Series provides the safety, reliability, and system longevity that engineers and facility operators demand.

Explore the Full JEFFCOOL® Product Line

Looking for cooling solutions beyond the JEFFCOOL® ISF Series? Third Coast Chemicals offers a complete line of JEFFCOOL® products designed for diverse industrial applications. Contact Third Coast Chemicals Today to explore our full JEFFCOOL® portfolio and find the right product to optimize your system’s performance.

Fluid Maintenance Technical Support: Sample Test Kits

Third Coast provides free analysis and fluid maintenance technical support on initial system charges of JEFFCOOL® products + annual testing to ensure product integrity and analysis at no charge for system maintenance.

Sample test kits are free of charge and available upon request to Third Coast customers who purchase JEFFCOOL® products.

The kits include:

  • Self-addressed shipping box
  • Pre-labeled sample bottle
  • Weather-proof self-adhesive product installation tag

Analyses will be performed on samples after initial filling and at periodic intervals of at least once per year.

Request Information or a Test Kit for JEFFCOOL® ISF-55 or ISF-25 Today