10 bestRefrigerant Leak Sealerof February 2026
112M consumers helped this year.
1
FrostyCool R134a and R12 Replacement A/C Refrigerant Deluxe Recharge Mobile Sealer and Stop Leak Kit
FrostyCool
9.9
16% off
2
Leak Saver: Direct Inject - for Air Conditioner, Refrigeration, and Automotive Systems Up to 5 Tons - Compatible with All Refrigerants - Proudly Made in The USA
Leak Saver
9.8
3
Rectorseal 45309 AC Freeze PRO Nano Mini-Split Leak Sealer, Blue
Rectorseal
9.7
4
LEAK SAVER Direct Inject Refrigerant Leak Sealer – Small System AC Refrigerant Leak Sealant for Most HVAC Systems - Automotive Leak Sealer – Up to 1 Tons (Small)
Leak Saver
9.6
5
Nu-Calgon 4050-11 EasySeal Direct Inject-UV Dye Refrigerant Leak Sealant, Treats 1.5-5 Tons
NU-Calgon
9.4
6
Ultra Cool 1234yf Refrigerant kit w/Stop Leak
Ultra Cool
9.2
7
Rectorseal 45312 AC Leak Freeze 1.5oz Cartridge, 1.5 oz
Rectorseal
8.9
19% off
8
emzone Multi 12A A/C Deluxe Recharge & Sealant Kit
Emzone
8.7
9
Rectorseal 45317 AC Freeze PRO Nano Magic Frost Leak Sealer, 1.5 oz, Green
Rectorseal
8.5
10
Nu Calgon 4050-08 EasySeal Direct Inject
NU-Calgon
8.2
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