Graco RAC X Oneseal Seat/ Gasket Kit
Use the black seal (15A978) contained in this kit with all water based paints and less aggressive solvent based paints.
For Lacquer Thinner, Tricloroethylene, MEK, Acetone, brush Cleaner, Zylol or if the solvent is unknown purchase the kit no.248936 which contains the orange solvent seal(15A978).