Glass fiber reinforced polypropylene plastic welding rod

If you have a broken plastic part that has the marking "PP+GF15", that tells you that the part is polypropylene with 15% glass fibers. It may have markings like "PP+GF20" or "PP+GF30" or some other number next to GF. Whatever number follows the "GF" is the percentage of glass fibers that are in the polypropylene plastic.

Fiberglass reinforced polypropylene is used to make some personal watercraft hulls like the SD Spark hulls starting in the 2016 model year. If you have an SD Spark hull that is cracked, then glass reinforced polypropylene rod is needed need to fix your broken SD Spark hull. In addition to the SD Spark, glass reinforced polypropylene is also used to make the PWC hulls for the SD Wake, SD GTR, and SD GTI. It is also used in some headlight housings and other automotive parts.