DOOSAN Excavator Seal Kit DH500-7 K9002003 Arm Hydraulic Cylinder Seal Kit

State: Scratches, Dents

Cause: 1. Scratches on the contacting surface (dents)

2. Defective plating (pinholes)

3. Rust

4. Defective finish of the contacting surface

5. lncompatible bearing material

6. lntrusion of foreign objects

7. Handling such as installation method is inappropriate

8. lnappropriate storage method

9. Defective chamfering in the installation section

State: Failure (accumulation of pressure, fatigue)

Cause: Excessive back pressure (such as accumulated pressure)

Frequency of pressure appliion is high

Abrasion of the packing is high

State: Extrusion

Cause: Excessive pressure; large extrusion gap, malfunctioning backup ring, lnappropriate structure of the mounting groove section

We Can Supply Various Kinds Of Seal & Seal Kit,For Example Schematic ,Hydraulic Arm/Boom/Bucket Cylinder Seal Kit,Control Valve Seal Kit,Hydraulic Pump Seal Kit,Travel Motor Seal Kit,Swing Motor Seal Kit,Center Joint Seal Kit And So On.