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What is the Direct Inject?

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The Original Direct Inject Sealant – Invented by Enviro-Safe®

Enviro-Safe® Refrigerants is proud to be the original inventor of the Direct Inject refrigerant leak sealant. Since its groundbreaking introduction, this innovative product has saved homeowners and business owners thousands of dollars by preventing costly repairs and extending the life of HVAC systems.

As with any successful product, there have been many imitations and "knock-offs" introduced to the market. Unfortunately, some of these inferior copies have been known to cause damage to systems or deliver ineffective results—leading to frustration, expense, and unnecessary downtime.

Don't Settle for a Cheap Imitation

Only the genuine Enviro-Safe® Direct Inject offers the proven performance, quality, and safety that professionals and homeowners have trusted for years. When it comes to your HVAC system, choose the original. Choose Enviro-Safe®.



Enviro-Safe® ProSeal XL4 Inject – Refrigerant Leak Sealant

Small. Concentrated. Easy to Use.

Enviro-Safe® ProSeal XL4 Inject is one of our most requested and trusted refrigerant leak sealants. Designed for convenience and performance, this one-time-use product is a concentrated, easy-inject sealant that works with all refrigerants except ammonia.

ProSeal XL4 Inject is ideal for sealing small leaks in:

  • A/C condensers

  • Evaporators

  • Metal line sets

  • Fittings

  • Schrader valves

  • O-rings

  • Gaskets

  • Solder joints

It is especially effective in:

  • Heat pumps

  • Split systems & mini-split units

  • Packaged units

  • Microchannel coils

  • Coolers

  • Commercial HVAC systems

Key Benefits:

  • Travels with refrigerant gas, allowing it to reach and seal leaks faster and more effectively than many competing products.

  • Forms a durable, hard seal on metal and component connections.

  • No system pump-down required – including R-410A units.

  • No injection hose or caulk gun needed.

  • Schrader valve friendly – seals leaks around valves but allows reuse when connected. If product remains in the system, it will reseal after disconnection.

  • Concentrated formula means less material is added to the system, preserving system performance.

Why Choose Enviro-Safe®?

With over 17 years of experience in producing and packaging sealants, Enviro-Safe™ invented and launched our Sealant Injector Hose in 2014. Since then, it has been successfully used under private label across North America. Our products are designed for efficiency, ease of use, and environmental responsibility, helping reduce refrigerant emissions and save energy.

 
 
 

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