373 Seal Leak Stop is an additive that stops and prevents small leaks of refrigerant from rubber hoses, seals, gaskets and o-rings in automotive A/C systems. Contains tracer dye.

  • Contains tracer dye, visible with any U/V lamp
  • Excellent for preventative use
  • Does not contain polymers, will not clog A/C system and A/C service equipment
  • 60 ml dose for A/C systems with max. 1 kg of refrigerant