Hana Vina Proud to be a unit specializing in providing technical solutions and specialized industrial services, especially in the field of mechanical seal. With over a decade of experience in the industry, Hana Vina has become a trusted partner of hundreds of businesses nationwide in repairing, restoring and replacing mechanical seals for pumps, compressors, mixers and other rotating equipment.
Mechanical seals are one of the most important components in preventing fluid leakage in rotating equipment. When a problem occurs, replacing the wrong type or repairing it incorrectly can cause serious damage to equipment and systems. Hana Vina provide mechanical seal repair service Professional, ensuring technical efficiency, saving costs and optimizing operating time for businesses.
What is a mechanical seal and why does it need to be repaired?
Concept
Mechanical Seal is a sealing device installed at the contact point between the rotating shaft and the pump/machine casing, to prevent the liquid inside the device from escaping. This type of seal usually has two main surfaces: a static surface and a rotating surface, which contact each other under pressure to create a tight seal.
Common causes of failure
After a period of operation, mechanical seals may encounter phenomena such as:
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Wear of friction surface
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Broken spring or misaligned shaft
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Rubber gaskets are aging, hard, and cracked.
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Blockage due to dirt or chemicals
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Leakage due to incorrect pressure, incorrect installation direction
Instead of replacing the entire seal, repair, restoration is the solution chosen by many businesses to save costs, especially with imported seals that are expensive or have difficult to find replacement parts.
What does Hana Vina's mechanical seal repair service include?
1. Survey & equipment reception
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Get information from customer: equipment type, application, fluid type, temperature, operating pressure.
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Preliminary check of seal condition and related components.
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Evaluate repairability and turnaround time.
2. Disassemble – clean – analyze errors
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Remove the seal from the rotating device.
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Clean each detail with specialized chemicals.
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Analyze the cause of damage: wear, cracks, deformation, leakage, scale, incorrect installation techniques...
3. Processing & component restoration
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Re-machine the sealing face (carbon, ceramic, tungsten, silicon carbide…) with a precision grinder.
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Renew or replace springs, washers, rubber gaskets (O-rings).
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Restore contact surface, ensure flatness and roughness according to standards.
4. Assembly and technical inspection
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Reinstall the seal according to the manufacturer's specifications and standards.
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Check pressure, tightness, and coaxiality with specialized measuring equipment.
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Run the simulation in a liquid environment if necessary.
5. Handover – instructions for use & maintenance
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Deliver seals with detailed technical reports.
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Instructions for reinstalling into the rotating device.
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Provide periodic maintenance documents, advise on proper usage techniques to extend seal life.
What types of seals do we repair?
Hana Vina Accepting repairs of all types of mechanical seals of many different brands, types and applications:
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Single seal, double seal
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Seal with cooling chamber
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Dry seal, wet seal
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Seals for chemical pumps, water pumps, food pumps
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Seals for compressors, agitators, centrifuges
Common brands of seals: John Crane, Burgmann, EagleBurgmann, Flowserve, AES Seal, Sealtek, Roten, Chesterton…
Advantages of using Hana Vina's services
✅ Highly professional experience
Hana Vina With a team of well-trained engineers and technicians, we have successfully repaired thousands of mechanical seals for the following industries:
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Electricity and water
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Oil and gas – chemicals
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Food and beverage
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Paper – packaging
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Pharmaceuticals – cosmetics
✅ Modern technical workshop
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Fully equipped with grinders, CNC lathes, pressure testing machines, and sealed test chambers.
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Ensure high precision, restore components almost original.
✅ Cost savings
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Repairs can save up to 50–70% compared to replacing a new seal.
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Replace individual components instead of the entire kit.
✅ Clear warranty & after-sales
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Technical warranty commitment from 3 - 6 months depending on seal type and repair level.
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Support periodic inspection and lifetime technical advice.
Related services included
Hana Vina also provides support services such as:
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Supply genuine new mechanical seals
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Specially designed seals
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Installation and adjustment of seals at construction site
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Periodic maintenance for pumps and rotating equipment
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Repair vertical and horizontal pumps, chemical pumps...
Some typical customers
Hana Vina has been cooperating with many large enterprises such as:
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Thu Duc Water Plant, Tan Hiep, Vinh Phuc
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Nestlé Vietnam Company Limited
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Duyen Hai Thermal Power Plant, Vinh Tan
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Vietnam Paper Corporation
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Masan Group, Vinamilk, Sabeco
Contact for mechanical seal repair at Hana Vina
If your device is having problems with leaks, unusual heat, strange noises... then it is very likely that mechanical seal is broken. Don't let a small incident become a big loss. Let Hana Vina check and handle promptly.
