Laminar Pte Ltd Singapore

Laminar Pte Ltd


Professional On Stream Leak Sealing & Repair for Uninterrupted Performance

We Seal Leaks in Critical Piping and Pressure Vessels Worldwide

Group 1 1
Group 1 1


If left unaddressed, piping system threats such as leaks, corrosion, or wall thinning can be costly. Laminar offers on stream leak sealing services and mechanical repair in Singapore and worldwide for all types of pressure repair.

On-Stream Leak Repair or Underpressure Leak Sealing is a technique to achieve a seal with specialized compounds and/or a mechanical repairing device. This is a temporary solution to fix leaks until the leak issue can be repaired or replaced at the next scheduled plant shutdown. This repair can be done without interruption to daily operations and provides a temporary fix without incurring high costs and loss of production. 

Each leak repair case is assessed on its own to identify whether composite repair or mechanical solution is more suited to solve the problem. A detailed analysis of defects including pipeline dents and cracking can be provided. For the repairs, third-party repair systems that meet the qualification requirements of the reference standards will be used. When required, third-party calculations can be checked and verified.

1 1

Our team is qualified to provide efficient service for pipeline repairs and reinforcements for pipe systems operating up to 100 MPa at temperatures between -70°C and +160°C, subject to external/internal corrosion, leaks, dents and mechanical damages.

At Laminar, we provide custom solutions to any integrity threat, from the most conventional valve-packing leak to the most sophisticated high-pressure hydrocarbon-piping repair and reinforcement. We collaborate with global leaders in sealing composites and fittings manufacturers. Our local technicians repair all leak sources with our global engineering partners.

We assure our clients that we will provide the appropriate solutions to resolve any pipe, valve, or flange leak repairs, ensuring a prompt response.


Our Capabilities

  • Pressured piping systems from vacuum to 11,300psi (780 bar)
  • All fluid services from inert to highly hazardous
  • All piping materials, tank and vessel geometries and sizes
  • Fully structural repairs where required – preventing pipe separation
  • Over 100 types of chemicals from 0ºC to +600ºC

The Aim of Leak Sealing

  • Practical measure to protect the environment
  •  Maintain the integrity of process and piping systems
  • Extend the life of plant components
  •  Reduce effects of potentially harmful and polluting emissions by keeping systems on-line
  • Repair rather than replace, avoids unnecessary re-manufacturing and replacement


  • 24/7 emergency response services to quickly avoid severe damage.
  • Avoids the need for expensive shutdowns and lengthy downtime.
  • Lessens potential environmental damage and maintains product quality.
  • Universally safe sealing methods.
  • Helps preserve the integrity of your system
  • Improves the safety of plant operations by stopping harmful emissions
  • Minimizes environmental impact


  • Valve packing leak repairs.
  • Flange leak repairs.
  • Valve packing leak repairs
  • Piping and pressure vessel leak sealing & mechanical repairs.
  • On-stream valve repairs (failure to isolate, failure to close).
  • Cooling towers tanks and fittings leakages.
  • Piping and tube crimping (permanent on-stream isolation).
  • Storage tanks.
  • Electrical transformer leak repairs


A special combination of clamp (casing) and unique composites can seal a pipe leak. The clamp is customized based on pipe material, temperature, fluid, pressure, and type.

After identifying the leak location, the installed clamp will create a sealed envelope. Using a high-pressure hydraulic tool, the operator inserts a new sealing composite to create a seal around the leak. This technique is helpful in industrial settings to prevent production losses and environmental damage. 

To inject our sealing compounds, we use a customized hydraulic tools set developed by Laminar. We offer various combinations according to the project conditions.

The reason we would choose to use an injectable sealant such as PTFE is because it can be used to seal any water leaks on-gland packings, valve bonnets and flange joints– under-pressure with no shutdown required and is an ideal material for sealing your pipework. WRAS approved injectable sealant for sealing operational potable water leaks are available with no cure time required, making it ideal for a potable water network, cooling towers and semiconductor plants.


01 : Preparatory Stage


Preparation and reinforcement of the damaged area of ​​the pipeline for further work (replacement of fasteners, installation of ring adapters, installation of a clamp for additional tightening of the flange connection).

02: Localisation of The Leak Area


Depending on the pressure of the conveyed fluid and the leak/crack area size, one can use various methods without disrupting the process or causing a costly shutdown.

03: Preparation for Compound Introduction


Installation of injection adapters at the leak zone for subsequent composite injection.

04: Compound Introduction


Injection of a composite (depending on the nature of the fluid in the piping system) using an injection gun.


Online leak sealing is a cost-effective technique to repair pipeline leaks and prevent further damage. It involves applying specialised materials or compounds to seal leaks without shutting down the entire system.

This method allows quick and effective repairs, minimising downtime and reducing operational costs. It involves identifying the leak location and applying suitable sealants or compounds to the leaking area using innovative tools and equipment. Online leak sealing saves time and ensures pipelines remain functional during repairs.

Pipeline leakage is a severe problem caused by various factors, such as wear and tear, corrosion, and natural disasters. These factors can result in small leaks that are often hard to detect until they have caused significant damage.

Moreover, high-pressure changes and temperature fluctuations can lead to pipe leakage, causing decreased efficiency, energy loss, and product contamination. Poorly designed joints or connections and improperly installed valves may contribute to the problem, leading to excessive back pressure and leaks. Additionally, foreign objects or debris in the pipeline can cause wear and tear on the pipe walls, resulting in leakage.

Scroll to Top