Name: Rebuild Kit A-00251-18/400051-18
The Part number: A-00251-18/400051-18
T seal—in the center hole of the piston assembly. The function is preventing the ceramic piston plunger to approach the piston assembly directly. When the machine’s working, the ceramic piston plunger will collide with piston assembly, so the T-seal is used to prevent the sharp collision and protect the ceramic piston to reduce the damage.
Note: Lubricating oil should be used during installation.