![]() Or do I just seal the outside with duct seal? If the latter, then that means the rest of that tunnel is just empty. Find many great new & used options and get the best deals for GAS PIPE SEALER JOINT SEALANT JOINTING COMPOUND NONE SETTING THREAD PASTE SEAL at the best. Completed an assessment of the state-of-the-art for gas pipeline sealing technologies and. We design, fabricate and supply U seals to various gas pipeline. Seal-Tite, LLC project management and research products. Gasoila E-Seal Gas Pipe Thread Sealant is a soft set thread sealant designed specifically for ethanol blended gasoline. The suggested duplicate may be a solution, but if it is I need some clarification on whether I should be trying to get duct seal to completely fill that tunnel around the pipe. U seals form an important isolation method in toxic and flammable gas carrying pipelines. Smoothen the caulk line using your fingertips. You can go ahead and release the trigger to halt the flow of the caulk. Move the tip around the pipe till the joint connection is caulked completely. Proceed to squeeze the trigger and then apply caulk on the gap. Update: Based on the comments and suggested duplicate, I'll clarify that this pipe goes through a concrete tunnel at least 10 inches long. You can place the caulk’s tip close to the pipe joint. Use lath screen or lath metal, cement, hardware cloth, or metal sheeting to fix larger holes. Note that this is already in place, so something like a sleeve that needs to be put in place at the time the line is run is not an option. Step 1 Situation 1: Make Connections to Steel Gas Pipe If your old appliance is connected with a steel gas pipe and you’re installing a new appliance, buy a gas appliance connecting kit. Put caulk around the steel wool to keep it in place or use spray foam. So, I'm wondering is it OK to put expanding foam or caulking around that? Should I do just one or the other? Or should I pump foam deeper into the hole as thermal/ air insulation, and then after that's hardened, caulk around the outside for water seal? Or should I use some other product entirely? However, the sleeve stuff seems to be specific to underground penetrations through the wall? Googling this, I see a lot of mixed info - some ppl are saying expanding foam or caulk are OK, others are saying you MUST have a special sleeve. The gap is definitely large enough for insects to get through, and maybe small mice so I want to seal it up. ![]() It is not sealed around the pipe on the outside. I have a gas pipe that comes through my poured concrete foundation about 12 inches off the ground: ![]()
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