I have a converted an Igloo cooler into an electric HLT. Everything went fine, except that I can't get the seal around the heating element to stop leaking. I have tried it using the gasket that came with the element, I have tried some EPDM o-rings that I have at work just to test it and still leaks. it's just a small drip every 30 seconds or so, but I can't get it to stop no matter what I do. I am going to order a silicon o-ring today to see if that makes a difference. I really would prefer not to put silicon around the inside to seal it. I would love for someone who has had this problem tell me what they did to stop it.