A glue with extremely low electrical conductivity, based on zirconium silicate.
Mix 100 weight parts powder with 12 weight parts water.
It will appear to be far too dry. Carry on mixing for 2 minutes and it will become a soft, VERY STICKY paste. Place on the bonding surface and squeeze the parts together. It grips in seconds.
Wet material must be used within half an hour. Make small batches, 1kg maximum, otherwise hand mixing is difficult. Full chemical set takes about 24 hours.
Development no. 77038
Claimer: The above information had better be correct, since Dave Onderstall stakes his reputation on it.