Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Lowe's didn't have silicone (that I could find) but I got some clear ID .170" and OD 1/4" Vinyl tubing from pluming.  The ID is a bit two small, so I had to warm it up on a small phillips-head screwdriver. Perhaps silicone at this size would "stretch" more. Still got a weep (before even trying to steam up), which I expected but having this "seal" on allowed me to get a nice wrap of teflon.  This seems to be holding even during steaming up.

I perhaps 3/16" ID x 5/16" OD silicone tubing might work?  That I can get on Amazon...