YNF17479 EX100-5 arm cylinder seal kit (75mm spear)

Hydraulic mid-arm repair kit for EX100-5

Excavator arm cylinder sealing components

4379261 piston seals, rod seals, and O-rings

Durable hydraulic cylinder seals for EX100-5

High-quality mid-arm cylinder seal kit YNF17479

YNF17479 Arm Cylinder Seal Kit (75mm spear) 4379261 EX100-5 Hydraulic Arm Repair Kit Excavator Mid-Arm Seal Set

High-performance EX100-5 arm cylinder seal kit (75mm spear) designed to prevent hydraulic leaks and restore excavator mid-arm function.

Compatible with EX100-5 excavator arm cylinder (75mm spear)
Complete rebuild kit with piston seals, rod seals, O-rings, wiper rings, backup rings
High-pressure, wear-resistant sealing materials
Prevents hydraulic oil leakage and restores lifting/extension efficiency
Easy installation reduces downtime and maintenance costs

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EX100-5 Arm Cylinder Seal Kit (75mm spear) Description

The YNF17479 4379261 EX100-5 Arm Cylinder Seal Kit (75mm spear) provides all essential sealing components for rebuilding the arm cylinder of EX100-5 excavators. Hydraulic seals degrade over time due to high pressure, repeated operation, and oil contamination, leading to internal leakage, reduced lifting or extension performance, or abnormal cylinder movement.

This kit includes premium piston seals, rod seals, O-rings, wiper rings, and backup rings made of high-quality PU, NBR, PTFE, and rubber compounds. These materials provide excellent durability, high pressure tolerance, and reliable performance under demanding working conditions.

Trusted by service workshops, fleet operators, and aftermarket distributors, the YNF17479 seal kit offers a cost-effective and reliable solution to restore arm cylinder performance, minimize downtime, and prolong excavator hydraulic system lifespan.

EX100-5 Arm Cylinder Seal Kit (75mm spear) Technical Data Sheet

Parameter	Details
YNF Part Number	YNF17479
OEM Part Number	4379261
Model Compatibility	EX100-5 Excavator (75mm spear)
Product Type	Arm Cylinder Seal Kit / Hydraulic Cylinder Repair Kit
Included Components	Piston seals, rod seals, O-rings, wiper rings, backup rings
Material	PU / NBR / PTFE / Rubber
Function	Restores cylinder sealing, prevents leakage, stabilizes arm operation
Application	Excavator mid-arm cylinder maintenance
Brand	YNF
Origin	China
MOQ	1 Set
Shipping Options	Air, Sea, Express
Payment Terms	T/T, PayPal, Western Union

EX100-5 Arm Cylinder Seal Kit (75mm spear) Applications

Application Area	Description
Arm Cylinder Rebuild	Complete sealing solution for EX100-5 mid-arm cylinder
Excavator Hydraulic System Maintenance	Prevents internal leakage and restores lifting/extension power
Hydraulic Performance Restoration	Improves flow stability and cylinder response
Workshop & Fleet Maintenance	Ideal for service workshops and machinery operators
Aftermarket Hydraulic Seal Distribution	Suitable for distributors and rebuild specialists

EX100-5 Arm Cylinder Seal Kit (75mm spear) Detail Display

FAQs

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FAQs:

Q: Is the seal kit compatible with EX100-5 arm cylinder (75mm spear)?
A: Yes, it is specifically designed for EX100-5 excavator mid-arm cylinders.
Q: What issues indicate cylinder seal failure?
A: Hydraulic oil leakage, reduced lifting/extension force, abnormal cylinder movement.
Q: Is this a complete rebuild kit?
A: Yes, it includes all essential seals for arm cylinder overhaul.
Q: MOQ?
A: 1 set.

Request Quote for EX100-5 Arm Cylinder Seal Kit (75mm spear)

The YNF17479 4379261 EX100-5 Arm Cylinder Seal Kit (75mm spear) ensures reliable sealing performance for excavator mid-arm cylinders. Made from high-pressure and wear-resistant materials, it restores lifting and extension efficiency, prevents oil leakage, and reduces machine downtime. YNF Machinery guarantees stable quality, competitive pricing, and global shipping—perfect for repair workshops, fleet owners, and aftermarket distributors. Contact us today for your best quotation.

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YNF17479 Arm Cylinder Seal Kit (75mm spear) 4379261 EX100-5 Hydraulic Arm Repair Kit Excavator Mid-Arm Seal Set

EX100-5 Arm Cylinder Seal Kit (75mm spear) Description

EX100-5 Arm Cylinder Seal Kit (75mm spear) Technical Data Sheet

EX100-5 Arm Cylinder Seal Kit (75mm spear) Applications

EX100-5 Arm Cylinder Seal Kit (75mm spear) Detail Display

Request Quote for EX100-5 Arm Cylinder Seal Kit (75mm spear)

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