I use a wagner W 150 to spray urethane but it sits for months at a time as I sort out other mistakes. The gun recently started leaking from the linchpin that hinges the trigger. I removed the shaft and saw that the shaft seal that is supposed to slide on the shaft is no longer free and does not move freely from cleaning. It also does not mate fully with the inside of the cylinder.
Does anyone know where to get this shaft o-ring?