1195389 119-5389 PU Rubber NBR Black Dust Seal Hydraulic Cylinder Excavator Arm Boom Bucket Seal Kit

1195389 119-5389 PU Rubber NBR Black Dust Seal Hydraulic Cylinder Excavator Arm Boom Bucket Seal Kit

Version 1 (Material & Dust Seal Performance Focus)

The PU rubber and NBR black dust seal combination in 1195389 is engineered for excavator arm, boom, and bucket hydraulic cylinders. This 119-5389 hydraulic cylinder seal kit utilizes polyurethane for the wiper lip and nitrile for the secondary barrier. When dust and moisture threaten the boom cylinder, install 1195389 to keep the rod surface pristine during digging cycles. The black rubber compound of 119-5389 resists ozone cracking and petroleum-based hydraulic fluids. Excavator arm cylinders fitted with 1195389 show zero external weeping after 2500 hours of operation. Each genuine 119-5389 dust seal kit features a split design for easy installation without removing the rod. The bucket tilt function benefits from 1195389 because the dual-material construction handles both scraping and sealing duties.

Version 2 (Application & Component Protection Focus)

Excavator hydraulic cylinder overhauls demand the PU rubber and NBR black dust seal identified as 119-5389 for arm and boom circuits. The dust excluder component 1195389 works alongside the main rod seal to block abrasive particles. When servicing a bucket cylinder, always include 119-5389 to prevent premature scoring of the chrome finish. Part number 1195389 serves as the primary contamination barrier in loader tilt applications. Excavator boom cylinders equipped with 119-5389 demonstrate extended seal life in sandy soil conditions. The PU rubber element of 1195389 provides exceptional tear resistance during high-speed cylinder cycles. Field technicians prefer 119-5389 for bucket linkages because it accommodates slight rod misalignment without losing wiping force.