Grapple Cylinder Seal Kit 2.5"x 4"x 12.5", with improved piston seal. DNC-587V512

Includes two full-face, anti-extrusion backup rings capable of withstanding pressure spikes of up to 20,000 psi. Contains all the seals required for a YOU-15w359 cylinder rebuild, less BMF-2189P20023 Rod Wiper. Improved replacement for YOU-587V512.