Blueseal A/C Stop Leak for R-1234yf Systems, 95%+ Lab-Tested Seal Rate, Non-Polymer Formula, UV Dye Included, Made in USA, 0.65 oz Refill Syringe

Your A/C stopped blowing cold. You had it recharged. Three months later, same problem. A slow refrigerant leak keeps costing money and fixing it does not have to mean a shop visit or fumbling with equipment you have never used. Blueseal A/C Stop Leak is a stop leak sealant additive, not a refrigerant, containing no HFCs or ozone-depleting substances. It delivers a lab-tested 95%+ seal rate on R-1234yf systems losing up to 25oz annually. The non-polymer mineral oil formula bonds under refrigerant pressure to seal evaporator cores, condensers, hoses, gaskets, and O-rings, without clogging expansion valves or reacting with moisture. Professional-grade UV dye is already included, so any larger leak can be located fast under a black light. The 0.65 oz syringe puts the exact dose in your hands. No estimating. No overfilling. One controlled application. Built for first-time repairs and shop technicians who need nothing wasted. Made in the USA by Blueseal Technologies, Inc.

• LAB-TESTED 95%+ SEAL RATE: stop leak sealant additive for R-1234yf systems; contains no refrigerant or HFCs; seals leaks losing up to 25oz annually; non-polymer formula bonds under pressure; safe for metal and rubber; made in USA
• PROFESSIONAL UV DYE INCLUDED: pinpoint leak locations without a separate dye purchase; UV dye activates under black light to reveal leak points across evaporator cores, condensers, hoses, gaskets, and O-rings
• SEALS ALL COMMON A/C LEAK POINTS: bonds on contact with oxygen under system pressure to seal evaporator cores, condensers, rubber hoses, gaskets, and O-rings; also reconditions aged and dried rubber seals
• NON-POLYMER SEALANT ADDITIVE: contains no refrigerant, HFCs, or ozone-depleting substances; mineral oil base does not react with moisture or oxygen; safe for expansion valves, TXVs, and Schrader valves; compatible with all R-1234yf systems
• PRECISE SYRINGE APPLICATION: controlled 0.65 oz dose prevents overfilling; measured delivery designed for accurate, no-waste application; 0.65 oz refill syringe only; applicator adapter not included