Dr. Mike's Model n Crafters ca is in a class by itself. I don't know about PP (ed. polypropylene and yes it does) but a call to him should answer that. It's the only glue that I am aware of that will bond Delrin. The diaphragms on Walthers cars are Delrin and I use the glue to put on styrene rod to simulate a rib and make them look very nice.