Plumbing Hercules Hvac/Heating Products | 1 Gallon Boiler Liquid

Features:
Seals And Repairs Cracks And Leaks In Steam And Hot Water Systems.
This Liquid Formula Will Not Clog Hot Water Coils, Controls, Valves, Or Vents.
Forms A Tough Seal That Expands And Contracts With Heat.
Resists High Pressure And Is Not Affected By Boiler Cleaners.
No Odors – No Priming – No Foaming.
Does Not Contain Petroleum Distillates.
Compatible With Hercules Cryo-Tek Or Other Types Of Propylene Glycol-Based Anti-Freeze Products, Chemical Additives And Boiler Treatment Compounds.
Nsf Registered/Usda Authorized.