How AC Sealant Works

Coolseal™ is a blend of lubricants and additives. When the sealant has been exposed to an environment where a dramatic drop is a pressure and temperature, a seal will begin to form at the leak site until it is fully sealed.

Seals micro leaks in condensers, evaporators, O-rings and hoses. Can add years to older, out-of-warranty AC&R systems that leak small amounts of refrigerant. Works with all popular refrigerants and oils.
  • Non-polymer, oil-soluble formula safe for system components and recovery equipment
  • Meets ASHRAE 97 standard for chemical stability
  • Can be injected with the system off or running
  • Available in three convenient delivery methods

Cool Seal™ is the hassle-free way to seal refrigerant leaks in condensers, evaporators, O-rings, and hoses.


  • CS-1CS – (2) 0.5 oz (15 ml) EZ-Ject™ cartridges prefilled with Cool Seal™ A/C Leak Sealer
  • RP-EZ-50 – EZ-Ject™ dye injector assembly
  • RP-CS-25 – 8 in (20 cm) Cool Seal™ EZ-Ject™ hose assembly
  • RP-AD-410A – R-410a adapter/purge fitting.




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COOL SEAL SEALANT Cool Seal CS-100CS treats up to 2 tons of cooling and the CS-2CS treats up to 8 Tons of cooling....

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