YNF00059 arm cylinder seal kit for EX150 excavator

Arm cylinder seal components for EX200‑3

Seals and O‑rings for EX200‑3C arm cylinder

EX200‑3M hydraulic cylinder repair seals 4369914

Heavy-duty arm cylinder seals YNF00059 close-up

Synthetic rubber gasket for EX arm cylinders

Komatsu-compatible 4369914 cylinder seal set

4369914 Arm Cylinder Seal Kit for EX150 / EX200‑3/3C/3M – YNF00059

Complete arm cylinder seal kit for EX150/EX200‑3/3C/3M ensures reliable hydraulic performance.

Product Features

OEM-compatible seal kit, equivalent to part number 4369914
Includes precision-molded seals, O‑rings, wipers, and backup rings
Made of high-grade synthetic materials: oil, heat, and abrasion resistant
Simplifies cylinder refurbishment and minimizes machine downtime
Enhances cylinder sealing integrity and extends service life

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Arm Cylinder Seal Kit Description

The YNF00059 Seal Kit (OEM 4369914) is engineered for refurbishment of arm cylinders on Komatsu EX150 and EX200‑3, EX200‑3C, EX200‑3M excavators. It includes a complete set of seals, O‑rings, wipers, and backup rings made from durable synthetic rubber compounds. These components are precision-dimensioned to OEM standards to ensure leak-free performance under high hydraulic pressure and temperature variations. Suitable for maintenance teams, rental services, and fleet operators, this kit streamlines cylinder overhaul and restores hydraulic sealing efficiency.

Arm Cylinder Seal Kit Technical/Data Sheet

Parameter	Description
OEM Part Number	4369914
Applicable Models	Komatsu EX150, EX200‑3, EX200‑3C, EX200‑3M
Kit Components	Piston seals, rod wipers, O‑rings, backup rings, gaskets
Material	High-grade synthetic rubber compounds
Purpose	Arm hydraulic cylinder overhaul and seal refurbishment
Origin	China
Brand	YNF Rubber
MOQ	5 sets
Shipping	Sea freight or air freight
Payment Terms	T/T, L/C

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YNF00059 provides a full OEM-compatible arm cylinder seal kit, restoring hydraulic integrity in Komatsu EX-series excavators. With durable, high-quality seals, it prevents leakage, reduces maintenance costs, and extends cylinder life. Perfect for fleet maintenance, workshop overhauls, and rental operations. Contact us now for a free quote and technical support.

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Arm Cylinder Seal Kit Applications

Use Case	Description
Excavator Arm Refurbishment	Complete seal kit for arm cylinders in EX150/EX200‑3 series
Maintenance Workshops	Fast replacement solution for cylinder overhauls
Fleet & Rental Operations	Restores cylinder efficiency and prevents hydraulic leaks
Heavy-Duty Projects	Ideal for mining, road construction, and excavation tasks

Arm Cylinder Seal Kit Detail Display

More Information

Knowledge Base

Best practices for arm cylinder refurbishment
Common causes of cylinder seal failure and how to prevent them
Impact of high temperature and pressure cycles on seal longevity

Related Products

YNF00060 Boom Cylinder Seal Kit for EX200 series
YNF04650 Final Drive Seal Kit for EX120 excavators

FAQs

Does this kit include all seals for a full cylinder rebuild?
Yes — it includes all piston seals, rod wipers, O‑rings, and backup rings.
How long is delivery lead time?
Samples ship within 7 days; sea freight 30–45 days; air freight 7–10 days.
OEM packaging options?
Yes — bulk orders can include OEM-style labeling and packaging.