R-134a Refrigerant with Leak Sealer/UV Dye & Trigger (10.25 oz.)

When your car's AC starts blowing warm, low refrigerant is the most common cause — and small leaks in rubber hoses, gaskets, and O-rings are usually to blame. Interdynamics packages R-134a refrigerant, a leak sealer, and UV dye together in this 10.25 oz can with a trigger dispenser, so you can recharge the system and address minor leaks in one step.

The can contains approximately 10 oz of R-134a refrigerant along with 0.25 oz of additive blend. The leak sealer component targets the most common failure points — rubber AC hoses, gaskets, and O-ring connections — by sealing small gaps that allow refrigerant to escape over time. The UV dye stays in the system after charging, so if a leak persists or develops later, you can use a UV light to trace exactly where refrigerant is escaping. That saves a lot of guesswork compared to soapy-water testing or pressure checks.

The trigger dispenser version makes application straightforward. Connect it to the low-side service port, pull the trigger, and monitor the system pressure as refrigerant flows in. This is meant for R-134a automotive AC systems, which covers most vehicles from 1994 onward. For older R-12 systems, a different product and conversion are needed.