Nason 2k primer
Ok I went to the local Dupont dealer and asked for a urethane primer to be used over epoxy primer and I was sold Nason Slect Prime 421-20 primer surfacer which is indeed a two part primer but when I checked the product data sheets for Nason I find that they have Select Prime 421-19 2k and 421-17 2k listed as urethane primer but the 421-20 is listed simply as primer surfacer? Is it urethane? The paint salesman says it is but I am not sure as the data sheet does not say. What is the diffrence here? According to the data sheet it looks like it will do what I want but I have sprayed it over 12 hr cured unsanded epoxy and I need to know if this is ok as the data sheets dont say.