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🔧 Seal leaks like a pro—fast, clear, and hassle-free!
Nu-Calgon 4050-05 EasySeal Ultimate SS is a concentrated, water-resistant leak sealant designed for professional HVAC use. It treats systems up to 10 tons in a single application without requiring pump down on R-410A units. Compatible with a wide range of systems including split systems, heat pumps, and mini splits, it features a clear tube for visible application and is recognized as a top trusted brand in leak repair.
| ASIN | B014T2K8WO |
| Batteries required | No |
| Best Sellers Rank | #258,455 in Automotive ( See Top 100 in Automotive ) #540 in Air Conditioning Line Repair Tools |
| Brand | Nu-Calgon |
| Color | clear |
| Customer Reviews | 4.2 4.2 out of 5 stars (44) |
| Global Trade Identification Number | 00681001405058 |
| Included Components | Single Nu-Calgon 4050-05 EasySeal Ultimate SS (0.1 oz. Vessel) |
| Item Form | Liquid |
| Item Weight | 0.16 ounces |
| Item dimensions L x W x H | 1 x 3 x 10 inches |
| Item model number | 4050-05 |
| Manufacturer | Nu-Calgon Wholesaler, Inc. |
| Material | Resin |
| Number of Items | 1 |
| Product Dimensions | 1 x 3 x 10 inches |
| Style | Compact |
| Surface Recommendation | Coils, Refrigerant Lines |
| UPC | 681001405058 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Water Resistant |
A**R
good details
good price
D**4
Recommended
Best
K**G
Leak was too big for this sealer
I can’t say that I blame the sealer for the size leak I was trying to stop. It was a long shot. In my case it didn’t work. However, I have a very slow leak in another unit so I will try it again. Better than $7200 for a new unit.
A**X
DON'T BUY! SILENT COMPRESSOR KILLER - KILLED MY $2K UNIT
Added Nu-Calgon 4050-05 to fix a leak in my walk-in cooler (R449a system). Stopped the leak BUT murdered my compressor and TXV in 9 months. Technician confirmed sealant sludge choked the valves. This poison claims to 'fix' systems but actually DESTROYS them slowly. Cost me $3k+ in repairs vs. a $50 leak repair. WARNING: This isn't a fix -it's a $3,000 time bomb for your HVAC. Never again，You will also need to pay a high price for a thorough cleaning
S**E
Excellent Product
•Money Saver •Nice Features •Easy To Use •Well Made •Very Effective •Good Value •Fast Shipping Works As Advertised
R**X
Gave this the the AC service guy and he installed to fix a leak.
Product stopped the leak and seems to work. Purchase this product and gave it to the AC service guy to install with more Freon been working for 4 weeks now great leak free. Just make sure you don’t put too much of this in your unit. If you put too much in your unit can do more harm than good only install to match the ton size of your unit.
A**R
Goes in the low side
Worked great.No more leak
M**L
Don't buy
Did not fix the pin hole in my unit
Trustpilot
1 day ago
3 weeks ago