Solderless One Part Copper Bonding. Starts to set up in 20 seconds and forms a solid bond in 3 minutes. In 12 minutes the bond will withstand 850psi of refrigerant pressure. Bonding time in 1 minute for aluminum and is set in 4 minutes. Approx. 2 Hours is fully cured and will withstand 1200psiof refrigerant pressure. Compatible with all refrigerants and oils. Temperature range after cure: -65°F to 350°F (-54°C to 176°C). Bottle lasts Minimum of 12 Months After Opening. One Bottle Makes 200 or More Bonds on 1/2 -inch Tubing. Makes the Same Number of Bonds as 1-1/2 Pounds of Braze at Approximately 25% of the Cost of 15% Silver Braze. Rated to 1200psi and -65°F to 350°F