Hercules Cryo-Tek -100 is a premixed propylene glycol anti-freeze formulated for hydronic heating and cooling closed-loop systems. It provides freeze, flow and burst protection while its triple protection inhibitor package guards against corrosion, mineral deposits and scale. Use in systems with steel, copper and most other metals; check dilution tables for desired protection levels.

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