After 4 years the stove gasket on my Englander nc13 is getting worn. Had a hard time figuring out which gasket to run. What have y’all used that have replaced them? I ordered some 5/8 “ high density” rope gasket I’m hoping ends up being the correct size. Also what kind of high heat silicone? Automotive rtv looks like it’s only good to 500° . Was looking at the Rutland fiberglass gasket stuff says good up to 2000.