SEAL KIT - HYDRAULIC CYLINDER (JLG JL991/10151JCB)

JL991/10151JCB: A damaged seal kit can allow hydraulic fluid to bypass the piston, reducing cylinder force and causing slow or erratic movement. During inspection, a worn seal kit may show visible cracking or flattening of the sealing lips. Seal kit condition directly affects the cylinder's ability to hold pressure and maintain consistent motion. Keeping a seal kit in sound condition helps prevent external leaks that can create slippery surfaces and fluid loss. This aftermarket replacement part references the OE maker JLG and cross-references part number JL991/10151JCB. The kit includes multiple sealing elements that separate fluid chambers and wipe the rod clean during retraction. Verify the serial number or application, then call (562) 693-7748.

Part number variants: JL991/10151JCB, jl991/10151jcb