P-403L High Bake Phenolic

P-403L high bake phenolic has been the industry standard for decades for the storage and transport of chemicals in rail cars and ISO/storage tanks. It is the optimum choice for your applications where pH< 9 is likely to be encountered. P-403L offers excellent resistance to solvents, acids and salts, including 70-98% sulfuric acid at temperatures up to 120° F.

“We have not found any other tank liner that has the longevity nor the resistance to chemicals including acids as the Heresite P-403L. It not only protects, but unlike many competitive brands, it will not contaminate the contents in the tanks. I have a current customer that we are working with that got 20 years of service storing acid based liquids before their tank liners with P-403L needed to be recoated. Now that’s what I call protecting your investment. ”

Jim Mashke CB Mills


  • Rail cars
  • ISO/storage tanks


  • Applications where pH <9 is likely

Sample test data

  • Meets the requirements of the FDA regulation, Title 21, CFR175.300
* U.S. Food and Drug Administration, Code of Federal Regulations, PART 175 — Indirect Food Additives: Adhesives And Components of Coatings. Updated 6/1/13