Polyvance R10-04-03-BK Black Flat FiberFlex Welding Rod (30 ft)
FiberFlex is Polyvance's "Universal" rod. So, it is similar to a brazing process. It sticks great to polypropylene and TPO. Each rod is 12 in (30 cm) long and is 3/8 in (4.76 mm) wide and 1/16 in (1.6 mm) thick.