Arm Cylinder Seal Kit 707-99-69780 /7079969780 for Komatsu
Arm Cylinder Seal Kit 707-99-69780 /7079969780 for Komatsu
In stock
Product Description
Part Name: Arm Cylinder Seal Kit
Part Number(s): 707-99-69780
Brand Compatibility: Komatsu
Machine Type: Construction Equipment
Component: Arm (Stick) Hydraulic Cylinder
Condition: Brand New
Shipping: Fast worldwide shipping with secure packaging and reliable international delivery within 2–7 business days.
The 707-99-69780 Arm Cylinder Seal Kit is manufactured to OEM specifications for the arm (stick) hydraulic cylinder used on selected Komatsu construction equipment. This complete hydraulic cylinder overhaul kit includes precision-engineered rod seals, piston seals, wear rings, guide rings, backup rings, O-rings and dust seals designed to restore hydraulic sealing performance, eliminate hydraulic oil leakage and maintain correct operating pressure. Manufactured from high-quality sealing materials, it provides reliable service life under demanding construction, mining, quarrying and earthmoving conditions.
The arm hydraulic cylinder controls the movement of the excavator stick, allowing precise extension and retraction during excavation, trenching, grading and material handling. Continuous exposure to heavy loads, high hydraulic pressures and abrasive environments gradually wears the cylinder seals. Worn or damaged seals can lead to hydraulic oil leakage, stick drift, reduced digging force, sluggish arm movement and internal pressure loss. Replacing the complete seal kit restores hydraulic efficiency, protects the cylinder assembly and helps minimise costly machine downtime.
Typical Applications
Construction • Earthmoving • Mining • Quarrying • Civil Infrastructure • Road Construction • Heavy Excavation • Demolition • Material Handling
Common Symptoms
- Hydraulic oil leakage from the arm cylinder
- Stick drifting during operation
- Reduced digging force
- Slow arm extension or retraction
- Internal hydraulic pressure bypass
- Difficulty maintaining arm position
- Reduced hydraulic system efficiency
Cross-Reference Part Numbers
OEM Part Number: 707-99-69780
Compatible Models
Construction Equipment: Compatible with selected Komatsu machines using OEM seal kit 707-99-69780.
Fitment Note
Please verify the OEM part number, machine model, serial number and arm hydraulic cylinder assembly before ordering. Komatsu may use different arm cylinder configurations depending on the machine model, production series and serial number. Contact Imara Engineering Supplies if you require assistance confirming compatibility.
Technical Specifications
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Is there a warranty on products purchased from IMARA Engineering Supplies?
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Does IMARA Engineering Supplies offer international shipping?
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