Mechanical Seal Repair Service and Failure Analysis Process

 

Step 1: Cleaning

Cleaning is a crucial step in repairing mechanical seals, as any debris or contamination can cause the seal to fail prematurely. To clean the seal faces, you can use a lint-free cloth or paper towel and a mild solvent such as isopropyl alcohol or acetone. Be sure to avoid using  Sand blasting is sometimes required to determine the state of mechanical seal components.

Step 2: Design

After cleaning the seal faces, you can proceed to replace any damaged or worn components. This may involve replacing the seal faces, O-rings, gaskets, springs, or bellows. Be sure to use high-quality replacement parts that are compatible with the pump or rotating equipment.

The maintenance engineering team creates drawings of replacement parts and confirms the budget. Once you accept the quote, the engineering team begins making the replacement parts.

Step 3: Polishing and Lapping

Polishing is the process of using abrasives to remove surface imperfections and create a smoother surface finish. This can be done by hand or with a machine. The goal of polishing is to reduce surface roughness, which can cause leakage or premature wear of the seal faces. Polishing is typically done with diamond paste or other specialized abrasives.

Lapping is a similar process, but it typically involves a finer abrasive and a more controlled process. Lapping is often done after polishing to achieve an even smoother surface finish. In lapping, the two surfaces are rubbed together with a fine abrasive slurry, which removes any remaining surface imperfections and creates a highly polished surface.

Both polishing and lapping can significantly improve the performance of mechanical seals by reducing surface roughness and improving the contact between the two sealing surfaces. Proper polishing and lapping techniques can help  and reduce the risk of leakage.

Step 4: Assembly And Testing

Assemble mechanical seal and perform static and dynamic tests. When the mechanical seal passes the test, it will be delivered to any location that you request.

Can the Mechanical Seal be rebuilt?

Yes, mechanical seals can be rebuilt. In fact, rebuilding mechanical seals is a common practice in industries that rely heavily on mechanical seals such as the chemical, mining, and oil and gas industries.

The process of rebuilding mechanical seals involves taking apart the seal, cleaning and inspecting the parts for damage, and replacing any damaged or worn-out components. The seal is then reassembled with new parts and reinstalled onto the equipment. Rebuilding mechanical seals is a cost-effective alternative to purchasing new seals and ensures the continued reliability and performance of equipment.

 

Written by : Sarwaidi.ST.MT