Copper Lock No Heat Solder, 2oz Tube, Red 10-800 - Made in USACopper Lock No Heat Solder, 2oz Tube, Red 10 801 Made in USA No Heat Required Fast, easy, permanent Apply inside the copper connector, 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 Can withstand temperatures from 60 degrees F to +300 degrees F