OEM-GRADE AUTOMOTIVE LEAK DETECTION - The TRACERLINE brand from TRACER PRODUCTS is the most trusted name in automotive leak detection. Major OEMs around the world trust the Tracerline brand ensures quality and system integrity. PRODUCT DETAILS - Easy to use, Includes prefilled, disposable syringe, R-134a hose/coupler with check valve and adapter/purge fitting, Services 1 vehicle, Comes in full-color clamshell packaging. STOP AC LEAKS - CoolSeal AC Leak Sealer is a unique additive that seals slow, pesky leaks in compressors, condensers, evaporators, accumulators, O-rings and hoses ─ quickly and permanently. SYSTEM COMPATIBLE - The non-polymer, oil-soluble formula is safe for A/C system components and recovery equipment and is compatible with all popular refrigerants, including R-1234yf (requires adapter). MADE IN THE USA - Proudly manufactured in the U.S.A., Tracer Products has over 65 years of experience delivering award-winning professional service and the industry’s most powerful leak detection dyes, inspection lamps, and diagnostic tools. Seals leaks in condensers, evaporators, accumulators, O-rings and hoses — quickly and permanently. Compatible with all popular refrigerants, including R-1234yf*. Non-polymer, oil-soluble formula is safe for A/C system components and recovery equipment. NOTE: R-1234yf systems require TP9831 adapter Proudly made in the U.S.A., Tracer Products is a family-owned company with three generations of experience in delivering award-winning professional service and the industry’s most powerful leak detection dyes, inspection lamps and diagnostic tools. Today, major OEMs around the world trust the Tracerline brand. Over 275 million vehicles have used Tracerline’s UV fluorescent leak detection dyes to ensure quality and system integrity. For more than 60 years, Tracer Products has engineered the highest-quality, premium performance leak detection dyes and products. As the inventors of UV fluorescent leak detection, we take pride in crafting the most superior leak detection dyes in the industry.