Description
Encapsulated O-ring found at the top of manifold in many Graco sprayers. This is the O-ring that seals the manifold to the filter support. If your unit is leaking up and out of the threads when pressured up, this is the o-ring you need. Usually fits Graco 390-595. Check Graco Parts book to confirm the correct part number for your unit. Graco part number 117828.