Nu-Calgon
Nu-Calgon Leak Sealer Spray 16 oz Black 4296-51
Rubberised spray seals AC and refrigeration leaks, dries in 20 to 30 minutes and stays flexible from -10° to 250°F
- TypeAir Conditioner Accessories
- ColorBlack
- Quick leak repairs with easy spray application
- Dries in 20 to 30 minutes for fast results
- Seals out rust and corrosion for lasting protection
- Flexible coating won't freeze or sag after drying
- Operates from -10° to 250°F across conditions
Quick leak repair for HVAC systems
Nu-Calgon Leak Sealer Spray is a rubberised coating designed for air-conditioning and refrigeration technicians who need to seal small leaks without dismantling equipment. The aerosol applies directly to the affected area and cures in twenty to thirty minutes, forming a flexible barrier that resists rust and corrosion.
Covers typical pinhole leaks in coils and fittings
One sixteen-ounce can treats the small punctures and joint seepage commonly found in residential and light-commercial systems. It is not intended for large ruptures, high-pressure blow-outs or structural damage that requires mechanical repair or component replacement.
Stable from minus ten to two hundred fifty
Once cured the coating remains pliable across a wide temperature range, so it will not freeze, sag or become brittle during normal system cycling. The product carries a California Proposition 65 warning for chemicals known to cause cancer and reproductive harm, so appropriate protective equipment should be worn during application.
Highlights
- Quick leak repairs with easy spray application
- Dries in 20 to 30 minutes for fast results
- Seals out rust and corrosion for lasting protection
- Flexible coating won't freeze or sag after drying
- Operates from -10° to 250°F across conditions
Specifications
| Type | Air Conditioner Accessories |
|---|---|
| Brand | Nu-calgon |
| Color | Black |
Questions about this item
Will the black Pan-Spray coating bond to the existing metal on my older AC unit without extra surface prep?
The rubberized coating applies directly in moist conditions and stays flexible from -10° to 250°F, sealing leaks while blocking rust and corrosion on aged components.
How do I confirm the 16 oz can has sealed the leak once the 20 to 30 minute dry time passes?
After the coating dries, inspect the joint for a continuous black film; pressure-test the system — no refrigerant escape means the seal is holding.
Does the 16 oz spray can include the nozzle, or must I buy a separate applicator?
The 4296-51 can is a self-contained spray; the nozzle is built into the valve so nothing else is required to apply the coating.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
