RE: Loctite differences??
On occasion I will use the blue stuff but I've found that the purple for the most
part does everything I need it to do. It keeps things in place and requires less torque to
break free when you want to dis-assemble. If your using Loctite near or around plastics
you may want to consider using Loctite #425.
I also suggest you visit the Loctite web site.
Roby