Regan...
             We have been using a modified epoxy adhesive or an 
  ultra-violet light curable urethane adhesive (one for assembly, 
  the other for modifications/rework) on our pwb assemblies for 
  many years with excellent results. I don't know if these companies 
  are still around (I'am getting the info off of some old drawings), 
  but you can probably check the internet. Your best bet is to talk 
  to them about your requirements and maybe test a few of their products.

                                           Regards,
                                                     Bob
   Mereco Division
   Metachem Resins Corp                              Bob Vanech 
   West Warwick, RI.                                 Norden Systems
   (800) 556-7164

   Bacon Industries
   Watertown, Ma
   (617) 926-2550

   Dymax Corp
   51Greenwoods Rd.
   Torrington, Ct    
   (Sorry, don't have
    a number)

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