BOOM CYLINDER SEAL KIT – 2438U1173R300

• Part Number: 2438U1173R300
• Part Name: Boom Cylinder Seal Kit
• Application: Kobelco Excavator Boom Hydraulic Cylinder
• Compatible Models:
  • Kobelco SK400-3
  • SK400LC-3
  • SK400LC-4
  • SK400LC-6
  • SK450 series

Cylinder Size

• Rod Size: 115 mm
• Bore Size: 170 mm

Description

This is a hydraulic repair seal kit used for the boom cylinder of Kobelco excavators. The kit contains all necessary seals and sealing components required to repair or overhaul the hydraulic cylinder and stop hydraulic oil leakage.

Kit Usually Includes

• Rod Seal
• Piston Seal
• Wiper/Dust Seal
• Buffer Seal
• O-Rings
• Backup Rings
• Wear Rings / U-Cup Seals

Function

• Prevents hydraulic oil leakage
• Maintains boom cylinder pressure
• Ensures smooth boom lifting operation
• Protects internal cylinder parts from dust and contamination
• Improves hydraulic cylinder performance and service life

Common Replacement Reasons

• Hydraulic oil leakage from boom cylinder
• Weak or slow boom movement
• Damaged or worn seals
• Loss of hydraulic pressure
• Cylinder overhaul during maintenance