you can use on R22 also yes, it works on all refrigerants.

What will happen if used on a 1-ton system?

You will probably be putting too much in. They make a smaller dosage unit, but it doesn't have the dye in it. You can get a dye injector and inject the dye separately. You can use the smaller unit on automotive applications. The company is in St. Louis, MO and I had called their tool free number. Very Helpful.

Can I use this sealer in an empty mini split using pressurized nitrogen?

Needs to be installed when charging the system as it needs to circulate for about an hour with system running after fully charged

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Nu-Calgon 4050-11 EasySeal Direct Inject-UV Dye Refrigerant Leak Sealant, One Size Treats Systems 2 to 7.5 Tons

Product ID: 43345900

⚡No pump down required for R-410A units

💧Concentrated formula, less product needed

🔍UV dye for instant leak detection

507.37 DT

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Description

💡 Seal smarter, not harder—leak detection made effortless!

SEE IT WORK - Clear injection tube lets you visually confirm sealant flow for confidence on every job.
TRUSTED PROVEN - Over a million leaks sealed with the strongest formula made right here in the USA.
SKIP THE PUMP DOWN - No need to pump down R-410A units—cut your service time and hassle dramatically.
SEAL WITH PRECISION - Concentrated formula means you use less sealant per system, saving time and resources.
VERSATILE COMPATIBILITY - Perfect for split systems, heat pumps, microchannel coils, packaged units, and mini splits—one sealant to rule them all.

Nu-Calgon EasySeal Direct Inject-UV Dye Refrigerant Leak Sealant is a powerful, concentrated sealant combined with UV dye for quick leak detection. Designed for systems 2 to 7.5 tons, it eliminates the need to pump down R-410A units and works seamlessly with a wide range of HVAC systems. Made in the USA, it’s a one-time use, industry-leading solution trusted by professionals to seal over a million leaks efficiently.

Specifications

ASIN	B072Q3MX47
Best Sellers Rank	#28,511 in Automotive ( See Top 100 in Automotive ) #137 in Air Conditioning Line Repair Tools
Date First Available	June 1, 2017
Item Weight	0.16 ounces
Item model number	4050-11
Manufacturer	Nu-Calgon Wholesaler, Inc.
Product Dimensions	9.7 x 3 x 1.5 inches

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507.37 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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