Uniweld’s Cool Blue™ Heat Sink Paste (Part# 91861) protects the rubber and plastic seals in ball valves, solenoid valves, reversing valves and heat-sensitive materials. To prevent overheating, a heat transfer cool indicator has been added. As the paste absorbs heat, it changes to a dark blue. Safe to use, non-toxic, harmless to skin and odorless. Easy to clean: wipe with a cloth or wash with water.
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