$5.90
This is an o-ring for the Graco Fusion FX spray gun. It appears on Graco's exploded parts diagram as an o-ring, and it is supplied as a single ring rather than as part of a kit, so you can order exactly the quantity your rebuild calls for.
O-rings decide whether a rebuilt gun seals or weeps, and they are cheap enough that there is little sense in reusing a tired one while the gun is already open in front of you.
Identify yours by its position on the Graco diagram and order against the part number rather than by appearance, because small seals are difficult to separate on the bench. Genuine Graco OEM part 117559.
