The Verachem stuff is on my silencer/pipe joint. I used gray High Temp Silicone at the Head Pipe to Head joint. If you're worried about covering it over but don't have a heatsink ring to put on now, you can put one on later without removing the head pipe again. Mark the ring directly across from the open part where the tightening bolt is. Put the ring in a vice. Drill a hole through the fins so as to put a bolt in later to hold it all together. Dremel a scallop, if needed to put a screw and screwdriver through. Saw through the ring between the fins where you marked. Place each half on the pipe, position it, tighten the new bolt, then tighten the original bottom bolt. Might be a bit ugly on close inspection, but no one has said anything to me.