A dumb question here. I couldn’t find a good answer anywhere.
Are polyurethane and urethane caulks the same thing?
I was shopping for a caulk for a rubber/PVC connection. Only JTS1, a urethane caulk, claims good adhesion to both materials. All polyurethane caulks I checked out don’t mention to be used on rubber or PVC. It makes me think polyurethane and urethane caulks are quite different.
Many thanks!