ProSeal XL4 for Home & Industrial Units and R22 hose kit #9820

Stop Leak & Sealants

$34.00 Quantity:

Envirosafe ProSeal XL4 for Home & Industrial Units and R22 hose kit #9820 Photo - Click to Enlarge


 Enviro-Safe ProSeal XL4 (207 KB, PDF)

  • Kit includes:
    • ​1 can Enviro-Safe Proseal XL4
    • 1 each R12/22/502 hose with top tap #3345
  • Aerosol
  • Forms a hard seal on metal, Schrader valves, o’rings, gaskets, a/c condensers, evaporators, line sets and solder joints
  • Enviro-Safe Proseal XL4 repairs minor leaks in home, heat pump, large auto, and industrial applications
  • One can will normally repair a leak in systems up from 1.5 to 5 ton. If you have a smaller unit, please contact us.
  • If the a/c system that will not hold a vacuum, you need to use the Enviro-Safe Prodry XL4.
  • The reason for the vacuum or the use of Enviro-Safe Prodry XL4 is that it will eliminate moisture in the system. Moisture mixing with oils and refrigerant can cause you system to make sulfuric acid which will corrode and eat your system!
  • For larger units over 5 tons, we suggest you use the Enviro-Safe Proseal XL4 Direct Inject. These are available in various of the larger sizes.
  • Even though Proseal XL4 can form a seal on the Schrader valve, when you hook up to it the seal will release and allow you to use the Schrader if necessary. If there is still Proseal XL4 in the system it will reseal the Schrader.
  • DO NOT use in ammonia systems
  • DO NOT use in CO2 systems
  • DO NOT use in R410a systems- Pressure is too high and will explode the can- You MUST use the Enviro-Safe Proseal XL4 Direct Inject line of products.
  • Cannot be sent to Alaska or Hawaii or exported to foreign countries except in pallet quantities
  • Gas propelled
  • Installs the same way as refrigerant
  • Cannot be added to a fully charged system


Read and understand all warnings and directions before use. DO NOT use with ammonia. As per use with any flammable substance, take adequate precautions during use. 
1. A/C must be operating before installing Proseal XL4. 
2. Shake can well. 
3. Install can tap valve and charging hose. 
4. Install charging hose on the low pressure side ONLY. 
5. Invert can. 
6. Install all Proseal XL4 from can. 
7. Fill system to correct pressure. 
8. DO NOT overcharge the A/C system. 
9. Run the system for 45 minutes to circulate the Proseal XL4. 
10. Dispose of waste material in accordance with all local, regional, national, and international regulations. 
Note: This can will treat a typical 1.5-5 ton home A/C system. This product will repair most small leaks in evaporators, condensers, and fittings. 

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Designed to repair minor leaks in the evaporator, condenser, connecting fittings and metal lines. Do NOT use in Ammonia systems or 410a systems!

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