The seat kit contains the lower packing o-ring, carbide seat, ball guide spacer, and lower inlet ball. All of these sit inside the intake valve and are held in place by the ball guide cage and the piston valve.
For use with the following Graco airless sprayers:
Part #: 189920
Part #: 246215
Part #: 196896
Part #: 243176
Part #: 243174