Just check the dates on the cans. WO has a shelf life. I just happened to be in there on Monday picking up a can of WO#4. I found dates that ranged from june 09 back to sometime in 07.
thanks all. I can't seem to find an address for Altec Plastics on their website. Anyone know of the address and how to get their by public transportation?
Yup, Weldon #3 or #4 is solvent. WO #16 is basically solvent with some plastic melted in so it's closer to a glue. #16 is good for repairs or really rough work, otherwise you want the #3 or #4. Also don't forget to get an applicator bottle.