It's similar to Deluxe Materials Glue n Glaze but in the UK is hard to get hold of and eyewateringly expensive last time I looked. Glue n Glaze is easy to find and costs about £6 a bottle which lasts for years.
Use it all the time. Sometimes for canopies, more often for re-enforcing cockpit to fuselage seams. etc., for stuff I don't want coming adrift later on!