I have an older rig and have pulled the old oven/ stove out, therefore I have a gas line that needs to be sealed is there a clamp that you can buy to clamp this shut, or does it need to be melted clo...
You should follow that line (copper or flexible) back to the black iron pipe that supplies it and remove the line and fitting and cap or plug it. Make sure to use sealant on the cap or plug, and test for leaks.