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🔧 Seal leaks like a pro—fast, safe, and eco-smart!
RED TEK ProSeal12 is a 4 oz. liquid sealant designed for quick, permanent leak repair in A/C and refrigeration systems. Activated by moisture, it seals metal and rubber leaks while eliminating system moisture to improve efficiency and reduce compressor stress. Compatible with common refrigerants and lubricants, it’s a cost-effective, eco-friendly solution trusted by industry leaders.
| ASIN | B00DJDYS58 |
| Best Sellers Rank | #135,262 in Automotive ( See Top 100 in Automotive ) #335 in Automotive Sealants #3,172 in Oils & Fluids |
| Brand Name | RED TEK |
| Container Type | Can |
| Customer Reviews | 4.2 4.2 out of 5 stars (179) |
| Item Form | Liquid |
| Item Weight | 6.72 ounces |
| Liquid Volume | 2 Fluid Ounces |
| Manufacturer | Thermofluid Technologies |
| Material | Metal |
| Number of Items | 1 |
| Part Number | 402 |
| Recommended Uses For Product | Lubricant |
| Specific Uses For Product | Repairing leaks, maintaining air conditioning and refrigeration system efficiency |
| UPC | 819331004027 |
| Unit Count | 4 Ounce |
| Upper Temperature Rating | 239 Degrees Fahrenheit |
L**Y
Worksa as intended
Worked great on 30 year old car, seal the leak completely
M**L
Highly recommend
Excellent item, works exactly as described.
E**R
Worked wonders on my 21 year old truck
Apparently had a small leak in the evaporator behind the dash. Hundreds of $$ to replace. Put one can of Proseal into the system 2 months ago and it has been putting out very cold air just as it did when new. Did I mention this is a 21 year old Dodge Dakota truck. Excellent product that does just what it promises. How great to find a product that actually works as promised.
D**D
Destroyed the A/C system
It will need a complete overhaul now. I will probably junk the car instead and buy a new one.
J**G
works well on older cars.
We used it on a R-12 system with a new compressor and dryer. It work fine and blows cold and has no leaks. It take less gas than R134 or r12 so it works out to be cheap. Don't believe the literature. Pump down the system before you add it. Their instructions are awful and conflicting don't plan on any tech help from them and the internet is not much help either
D**.
This is the one you want to buy
Bought another Red named product and the can leaked out the sealant from the plastic top. This can was installed and sealed a leak . Highly recommend this one.
J**W
Sealed my leak!
I bought this due to a small leak in my 1992 Accord's AC (I could hear the leak itself). I had previously recharged by AC and a few days later my AC went from cold to cool and a week later it was lukewarm. I recharged my AC once again and used ProSeal - this time around, 2.5 weeks later it is still ICE COLD and the leak is not audible at all, which proves the product works. This has saved me hundreds of dollars to convert or fix the leak! UPDATE after 4 months: AC is still ice cold - can't believe it. I survived the Summer and saved a ton of money.
W**N
Used to top off my 1993 Saturn's AC sys
So, my friend had 2 larger sized OLD bottles of R12 that we put into my AC system, which I had left without enough in the system to engage the compressor for 6 years... But it worked. But the 2 cans just weren't enough to make the AC COLD. I bought this can with the hopes that it had JUST enough to make my AC cold. And it DID! So, not only did it hopefully fill in some tiny hole in the lines, but it had just enough refrigerant to top off the system to make it COLD. VERY happy. 2 Oct 2018
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