From: Paul@Houston.Texas   
      
   francis wrote:   
   > Hi there,   
   >   
   > Curious if anyone can recommend an epoxy/adhesive that will both adhere to   
   > HDPE plastic and not dissolve in gasoline? A bit of backstory..   
   >   
   > Shortly after purchasing a used car I planned to subject to winter duty,   
   > the plastic gas tank wiggled itself loose and made contact with the   
   > spinning driveshaft, wearing a nice elongated hole in the tank. With no   
   > nearby replacement available, I went down the rabbit hole of plastic   
   > welding HDPE tanks, and successfully closed that hole. With this fix   
   > replacement tank straps were acquired, and the risk of a shifting tank was   
   > abated. 20,000+ miles and a year later, the plastic weld is letting go,   
   > and gas is leaking again.. I can hardly be annoyed that the weld held on   
   > for as long as it did, but I opted for a hopefully permanent fix this   
   > time.   
   >   
   > I picked up a replacement tank, but upon delivery, I found the tray that   
   > the pump sits in had broken free from the tank itself. The yellow tray   
   > seen in this picture: https://i.imgur.com/x9bCPWym.jpg   
   >   
   > It appears to have originally been glued in placed, judging by this   
   > picture: https://i.imgur.com/luj0Z9Zm.jpg   
   >   
   > I really don't like the idea of this tray sloshing around in the tank,   
   > potentially knocking off the pickup sock at the worst time, so I'm looking   
   > for recommendations of adhesive that can stand to survive being submerged   
   > in gasoline permanently. I've found a few options, such as LOCTITE 1252795   
   > and Seal-All, but figured I'd ask to see if anyone recommends something   
   > else.   
   >   
   > What would you use to secure the tray in this situation?   
      
   Not only will the glue need to withstand gasoline but also Ethanol and   
   water.  About 50% of the gas stations in the USA use double wall FRP   
   pipe and the pipe joints are epoxy glued with epoxy made for that.  The   
   other 50% use double wall HDPE but they are not glued.  They are either   
   hot welded or clamped.  I don't know of any glue that will adhere to   
   HDPE.  BTW, the photos don't work.   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)