None. Oatey does not manufacture a solder or flux for this application.
What is the purpose for using the Oatey Flame Protector when soldering?
Use the Oatey Flame Protector when the joint you are soldering is close to a finished surface that can brown or catch fire when the flame touches it. You simply position the flame protector between the joint and the surface to keep the finished surface from being damaged from the flame.