You might consider a product called "Belzona". Many people use an epoxy called "JB Weld", but Belzona is much stronger. It is mixed similarly to epoxy, applied to a clean surface, then you coat the threads of the pressure sending unit with mold-release agent and form the material around the threads of the sending unit. Once cured, the mold-release agent allows you unscrew the sending unit in the future. This product is rather expensive. It is used mainly in the paper mill industry to rebuild shafts that have been chewed up where the bearings ride, and a replacement shaft has to come from overseas. Downtime can cost millions of dollars per day in lost production.
Belzona comes in two forms. The main product is machined exactly like any other metal including cutting it on a lathe, and it wears better than metal. The newer product forms rubber and is used a lot for making engine and machinery mounts.
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Monday, May 7th, 2012 AT 6:06 PM