TSI Supercool FFQ High-Temp A/C Flush - Flash Point Greater than 250 F - 32-Oz. is formulated specifically for high-temperature applications. it's non-flammable and non-hazardous; compatible with R134a, HFO-1234yf as well as R12 A/C lubricants. A very effective cleaner, it removes old oil and other contaminants. We're proud to say that our Fast Flush is biodegradable and environmentally friendly. Professionals worldwide trust TSI Supercool Quality Products and Great Service Standards.