I suppose any non-conductive potting material that will hold up under the heat and oil exposure would work. I'm not familiar with glyptol. What is it?

This should help


http://www.caswellplating.com/aids/glyptal.html

Last time I used it was on a submerged oil bathed yamaha stator winding and that was 8 years ago. Saved the stator and saved me 350.00. Bike still works and charges great. I know its expensive, but for my applications and a 250.00 pto its worth it.

I can see the wisdom in using the Glyptal, but I took the cheap route and potted the coil in JB weld. It went on well and cured hard as a rock. The resistance is still at 3.9 Ohms, so I didn't screw up the clutch during the repair. It will be awhile before I test it since the 1650 is disassembled and getting some much needed TLC. Steering box rebuild and an engine inspection are next. Good machine and a lot of fun to work on.