SEAL KIT - HYDRAULIC CYLINDER (JCB JC991-00003)

JC991-00003: A damaged seal kit can allow hydraulic fluid to bypass the piston, reducing cylinder force and causing sluggish movement. The JCB catalog reference for this aftermarket replacement part is JC991-00003. This seal kit contains multiple sealing elements that prevent fluid leakage between moving and stationary surfaces inside a hydraulic cylinder. A common failure consequence is external oil drips that create slippery floor conditions. During operation, worn seals may also permit internal leakage, leading to uncontrolled cylinder drift under load. Verify the serial number or application, then call (562) 693-7748.

Part number variants: JC991-00003, jc991-00003, JC99100003, jc99100003