Products Description

Product name	Grommet
Part number	138-5709
Excavator number	385C 5090B L 390F 336D 349D
Lead time	1-3 days after payment
Packing	neutral/original
MOQ	1 PC
Quality	high quality
Warranty	3-6 months
Shipping	DHL, UPS, FedEx, Air, Sea, DDP
Payment	TT/Alibaba Trade Assurance/Credit card/Western Union/Alipay/Wechat

Core Product Functions

Precision Sealing for Hydraulic Systems

Creates an airtight seal at hydraulic boom line connections, preventing oil leakage and maintaining stable system pressure to avoid operational disruptions.

Abrasion & Edge Protection

Reinforces the edges of pipeline through-holes, reducing friction between hydraulic lines and the excavator body to extend pipeline service life.

High-Pressure Compatibility

Engineered to withstand the high-pressure working environment of Caterpillar excavator hydraulic systems, ensuring reliable performance under heavy loads.

Contaminant Resistance

Blocks dust, debris, and moisture from entering pipeline interfaces, safeguarding internal hydraulic components from corrosion and damage.

Application Scenarios

Heavy-Duty Mining & Quarry Operations

Protects hydraulic boom pipelines of excavators in dusty, high-load mining and rock-crushing tasks, ensuring leak-proof sealing under extreme pressure.

Large-Scale Infrastructure Construction

Supports excavators in foundation digging, earthmoving, and high-rise building construction, maintaining stable hydraulic performance during long-hour continuous operations.

Road & Bridge Construction Projects

Ensures reliable sealing for hydraulic boom lines in roadbed excavation, bridge pier construction, and tunnel engineering-resisting vibration and harsh outdoor conditions.

Urban Reconstruction & Demolition

Adapts to excavators in old city renovation, building demolition, and pipeline laying, preventing hydraulic oil leakage in complex urban working environments.

User Evaluation