Nu-Calgon Leak Sealer Spray 16 oz Black 4296-51

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.