ENVIRO-SAFE Car AC Stop Leak for R134a and R1234YF | AC Refrigerant Leak Sealer for Window AC, Refrigerator and Small Mini-Split | Direct Inject | Up to 1.5 Ton ProSeal XL4 Fractional

★★★★★ 4.6 128 reviews
$29.99
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Management number 220470103 Release Date 2026/05/03 List Price $12.00 Model Number 220470103
Category
  1. Automotive
  2. Oils & Fluids
  3. Refrigerants
  • WORKS IN YOUR CAR - R134a (1994-2014 vehicles) and R1234YF (2014 and newer). The Fractional dose is sized specifically for automotive AC systems. Connect to the low-side car AC port (same port used to recharge). Inject. Let the system run 45 minutes. Works in cars, trucks, SUVs - any vehicle using R134a or R1234YF. No manifold gauge required.
  • ALSO WORKS IN WINDOW AC UNITS, MINI FRIDGES, AND SMALL MINI-SPLITS - Window AC units use R410a or R32 in a small enough package for the Fractional dose. R600a (isobutane) is the refrigerant in virtually all modern refrigerators and freezers. R290 (propane) is used in commercial reach-in units. Small mini-splits under 1.5 tons (18,000 BTU). The Fractional dose handles all of these - the right size means better sealing performance than a full-dose product.
  • 30-SECOND INSTALL - on car AC or home appliance. Connect to the low-side port or service fitting. Install using refrigerant or high side pressure. Disconnect. For car AC: system should be running with AC on full. For appliances: run system for 45 minutes to circulate. No pump-down required.
  • SAFE FOR TXVs, COMPRESSORS, AND ALL AUTOMOTIVE COMPONENTS - The formula is safe for all automotive AC components including variable-displacement compressors, orifice tubes, TXVs, and service fittings. Does not contaminate refrigerant recovery machines. Safe for all PAG, ester, and mineral oils.
  • THE ONLY RIGHT-SIZED DIRECT INJECT FOR SMALL SYSTEMS - original manufacturer since 2014. Full-dose products designed for 5-ton home systems are overdosed for a car or refrigerator. Too much sealant in a small system can actually reduce effectiveness. The Fractional dose was developed specifically for systems under 1.5 tons - right-sized from day one. Enviro-Safe. Made in the USA since 1996.
Brand ENVIRO-SAFE
Model ProSeal XL4 Fractional Direct Inject Leak Sealer | 1-Pack | Up to 1.5 Ton
Item Weight 0.48 ounces
Manufacturer Enviro-Safe
Item model number PS-XL4-FRAC
Manufacturer Part Number PS-FRAC-1

ENVIRO-SAFE Car AC Stop Leak for R134a and R1234YF | AC Refrigerant Leak Sealer for Window AC, Refrigerator and Small Mini-Split | Direct Inject | Up to 1.5 Ton ProSeal XL4 Fractional

ENVIRO-SAFE Car AC Stop Leak for R134a and R1234YF | AC Refrigerant Leak Sealer for Window AC, Refrigerator and Small Mini-Split | Direct Inject | Up to 1.5 Ton ProSeal XL4 Fractional

ENVIRO-SAFE Car AC Stop Leak for R134a and R1234YF | AC Refrigerant Leak Sealer for Window AC, Refrigerator and Small Mini-Split | Direct Inject | Up to 1.5 Ton ProSeal XL4 Fractional

ENVIRO-SAFE Car AC Stop Leak for R134a and R1234YF | AC Refrigerant Leak Sealer for Window AC, Refrigerator and Small Mini-Split | Direct Inject | Up to 1.5 Ton ProSeal XL4 Fractional

ENVIRO-SAFE Car AC Stop Leak for R134a and R1234YF | AC Refrigerant Leak Sealer for Window AC, Refrigerator and Small Mini-Split | Direct Inject | Up to 1.5 Ton ProSeal XL4 Fractional

ENVIRO-SAFE Car AC Stop Leak for R134a and R1234YF | AC Refrigerant Leak Sealer for Window AC, Refrigerator and Small Mini-Split | Direct Inject | Up to 1.5 Ton ProSeal XL4 Fractional

ENVIRO-SAFE Car AC Stop Leak for R134a and R1234YF | AC Refrigerant Leak Sealer for Window AC, Refrigerator and Small Mini-Split | Direct Inject | Up to 1.5 Ton ProSeal XL4 Fractional

ENVIRO-SAFE Car AC Stop Leak for R134a and R1234YF | AC Refrigerant Leak Sealer for Window AC, Refrigerator and Small Mini-Split | Direct Inject | Up to 1.5 Ton ProSeal XL4 Fractional

ENVIRO-SAFE Car AC Stop Leak for R134a and R1234YF | AC Refrigerant Leak Sealer for Window AC, Refrigerator and Small Mini-Split | Direct Inject | Up to 1.5 Ton ProSeal XL4 Fractional

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