ComStar Copper Lock Series 10-800 No Heat Solder, 2 oz Tube, Liquid, -60 to 300 deg F Melting Point

Fast, easy, permanent, fit in the copper pipe and within seconds a permanent leakproof seal will occur. Pressure may be applied after two minutes. Can withstand pressures up to 500 psi. Withstands temperatures from -60 to 300 deg F. Meets US Military specifications. Good with all refrigerants.