Hercules Cryo-Tek -100 is a pre-mixed, ready-to-use anti-freeze formulated with virgin propylene glycol and a triple-protection inhibitor system. It provides freeze, flow and burst protection for closed-loop hydronic heating and cooling systems while guarding against corrosion and scale. Use in systems with steel, copper and most other metals; not for aluminum heat exchangers.

• 1 gallon ready-to-use virgin propylene glycol formulation
• Freeze protection to -60°F, minimum flow to -70°F, burst to -100°F undiluted
• Triple protection inhibitor package prevents corrosion and mineral deposits
• Color: Red
• For closed-loop hydronic heating, cooling, solar, snow melt and radiant systems
• Compatible with metal, plastic (except CPVC) and rubber piping
• Not for use in boilers with aluminum heat exchangers