707-99-58080 707-99-58060 Excavator Arm Bucket Komatsu Cylinder Repair Seal Kit PC308USLC-3E0 707-99-59620

Main cause of leakage

Selection of seals

1. The pressure is too high and the seal is too hard to be extruded into the metal groove.

2. the sealing material and the medium are dissolved, and the seals are softened or dissolved.

3. seals used in the condition of high temperature, sealing material is carbonized.

4. low temperature leads to sealing material hardening, shrinkage and leakage.

5. Using too high linear speed leads to heating, dry grinding, carbonization and leakage of seals.

6. Poor lubriion in service condition leads to wear and leakage of seals.

7. The cavity used is subjected to vibration and causes leakage.

8. Leakage is caused by wear of seals caused by dust.

The correct method of installing the hydraulic sealing ring is as follows:

1. Check the relevant surfaces of the piston, cylinder and installation guide sleeve to ensure that they are fully clean, burr-free and edgeless.

2. The installation tools shall be smooth, edgeless and sharp to ensure that the seals will not be damaged in any form during the installation process.

3. A small amount of grease can be put on the relevant surface of the seals and cylinder to facilitate installation, but the residual grease is not allowed between the rubber elastomer and the sliding seal ring, otherwise it will affect the sealing performance.

4. Whether vertical or horizontal installation should maintain the coaxiality of the piston and cylinder, too much eccentricity is likely to damage the seal.

5. The installation speed should not be too fast, otherwise it will damage the seal.

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FAQ

Q1:What is your main products ?

A:We are specialized in the excavator spare parts, such as control valve ,hydraulic pump, center rotary , travel motor, swing motor, cylider, hydraulic break seal kit and other repair kits. If you need other excavator parts, we also can supply as your requirements.

Q2: Are you trading company or manufacturer?
A:We are trading company and we also have our own factory to produce seals.With more than 20 years of PU manufacturing experience.

Q3: What is your standard packing?
A: All the goods will be packed by sealing bag. Special packing method can be accepted when needed.

Q4: How long is your delivery time?

A: Generally it takes 5days if we have stock.

Otherwise it takes about 10-15days depending on the qty.

Q5: Can you provide samples? Is it free or extra?

A: Yes, we can supply the sample for free. Freight charges can be negotiated.

Q6: How soon i can get the quotation?

A: If your information is complete, we offer our quotation within 24 hours.

Q7: Could you supply solutions to us?

A: Sure we can.

Q8: What items we need to know for the offer?

A: Product types, material, dimension, quantity is the four main items we need to know before offer. More details information we get, more better price we can supply.