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Xantus Products
Xantus Products: Direct Inject Leak Sealants, UV Dyes and One-Step PVC Spray
Xantus Products is a veteran-owned manufacturer in Champaign, Illinois. Every Xantus sealant, dye and treatment is made in the USA and built for working HVAC/R technicians: the direct inject connects to the low-side service port, empties in seconds, and the system does the rest while it runs. The Max Seal formula has been sealing refrigerant leaks since 2000, with more than 2.3 million units sold, and it is proven not to clog manifold gauges, TXVs, cap tubes or pistons. Oozzio stocks the full Xantus line in Illinois and ships fast.Which Xantus product do I need?
| Job | System size | Xantus product |
|---|---|---|
| Seal a refrigerant leak | 1.5 ton or less (window units, mini splits, appliances) |  20-105 Max Seal Light Fractional |
| Seal a refrigerant leak | 1.5 to 5 ton residential |  20-101 Max Seal |
| Seal a refrigerant leak, ultra strength | 2 to 10 ton |  50-101 Max Seal Ultra |
| Seal a refrigerant leak | 6 to 15 ton commercial |  26-101 Max Seal Commercial |
| Seal a refrigerant leak | 16 to 30 ton commercial |  27-101 Max Seal Commercial |
| Seal and find the leak (UV dye built in) | 1.5 ton or less |  30-105 Max Seal Light + UV Dye |
| Seal and find the leak (UV dye built in) | 1.5 to 5 ton |  30-101 Max Seal + UV Dye |
| Seal and find the leak, ultra strength | 2 to 10 ton |  51-101 Max Seal Ultra + UV Dye |
| Seal, dry out moisture and find the leak | 1.5 to 5 ton |  31-101 Max Seal + ProDry + UV Dye |
| Seal, dry out moisture and find the leak | 6 to 15 ton |  32-101 Max Seal + ProDry + UV Dye Commercial |
| Find a leak only (UV dye) | 1.5 to 5 ton |  23-201 Firefly UV Dye |
| Find a leak only (UV dye) | 6 to 15 ton |  73-101 Firefly UV Dye Commercial |
| Neutralize acid and moisture after a burnout | 1.5 to 5 ton |  70-101 Acid Hunter |
| Restore efficiency of an aging system | 1.5 to 5 ton |  60-101 A/C Revive |
| Seal, dry, protect in one inject | 1.5 to 5 ton / 6 to 15 ton |  10-101 System Defender / 17-101 Commercial |
| Glue PVC in one step (cleaner, primer, cement in one spray) | Potable water, sewer, vent, condensate lines |  Lockdown 11 oz Clear, 11 oz Purple, 4.5 oz Clear, 4.5 oz Purple |
| Clear a clogged condensate drain line | Any | Zephyr Line Clearer kit and CO2 reload cartridges (see all Xantus products below) |
How a Xantus direct inject works
- Turn the system on and confirm it is running.
- Connect the direct inject to the low-side service port (the larger line) with the inject gun or a manifold hose.
- Purge the hose, open the low-side valve and watch the tube clear. Close the valve as soon as it is clear.
- Verify the charge to the manufacturer's specification and run the system for at least one hour so the sealant circulates and finds the leaks.
No pump-down, no evacuation, no measuring. Xantus sealants work with all refrigerants and oils except ammonia; the manufacturer lists R-290, R-600 and every common system refrigerant.
Frequently asked questions
Do I have to pump the system down first? No. Pump-down is not necessary with any refrigerant; follow the directions on the inject.
Can I inject while charging? Yes. The refrigerant being added pushes the sealant into the low-pressure side.
Will it clog my gauges or the metering device? Max Seal is proven not to clog manifold gauges and not to plug TXVs, cap tubes or pistons.
Why is there a small bubble in the inject tube? It is a gas bubble from vapor pressure introduced during filling. It is normal.
Which size do I buy? Match the system tonnage in the table above. Fractional injects are for 1.5 ton and under, residential for 1.5 to 5 ton, Ultra for 2 to 10 ton, Commercial for 6 to 15 ton, and the 27-101 for 16 to 30 ton.
Guides from Oozzio
- How to seal an AC refrigerant leak without evacuating the system
- Which Xantus Max Seal do I need? Sizing guide by tonnage
- One-step PVC spray: cleaner, primer and cement in one can
Documents and videos
Product bulletins, safety data sheets (SDS) and step-by-step application videos are published by the manufacturer at xantusproducts.com/how-to-videos and xantusproducts.com/products. Every Xantus product on Oozzio ships from our Illinois warehouse; call 217-607-5850 for application help.
23-101 Xantus Max Air Enhancer XL4 Inject
Xantus Products 23-101 Max Air Enhancer XL4 Inject.
$19.99
Xantus 19-101 Maximum Seal XL4 Valve and Hose (for 4 oz Canister)
Application valve and hose for the Xantus 21-101 Maximum Seal XL4 4 oz canister. Connects the canister to the low-side service port.
$21.46
Xantus 20-103 Maximum Dry XL4 Direct Inject Moisture Remover
Xantus Maximum Dry XL4 direct inject moisture remover for A/C and refrigeration systems. Made in USA.
$38.04
Xantus 20-105 Max Seal Light Fractional Direct Inject AC Leak Sealant, 1.5 Ton and Under
Direct inject refrigerant leak sealant for fractional systems 1.5 ton and under: window units, mini splits, appliances, automotive A/C. No evacuation. Made in USA.
$31.35
Xantus 21-101 Maximum Seal XL4 4 oz Canister AC Leak Sealant, 1.5-7 Ton
4 oz canister of Xantus Maximum Seal XL4 refrigerant leak sealant for 1.5 to 7 ton systems. Use with the 19-101 XL4 valve and hose. Made in USA.
$28.27
Xantus 21-103 Maximum Dry XL4 Direct Inject Moisture Remover
Xantus Maximum Dry XL4 direct inject moisture remover for A/C and refrigeration systems. Made in USA.