Home » Services » Online Leak Sealing

Online Leak Sealing

NESL pioneered online leak sealing in India in 1981, and is today the largest leak Service Company in the country. We offer the best solutions for leakage problems – safe, speedy, cost-effective and reliable. The idea is to prevent unwanted shutdowns and downtimes.

Online leak sealing today is the leak-sealing solution of choice as it saves energy, prevents an expensive and unwanted shutdown and can address a wide variety of leaks. Through continuous R&D, NESL has developed its own range of proprietary leak-sealing compounds that can address a wide variety of steam, chemical, hydrocarbon and gas leaks at temperatures up to 500°C and pressures up to 350 bar. Our compounds have been tested in thousands of applications over several years and you can be confident of their performance. We design, test and manufacture our compounds in-house at our ISO 9001 and ISO 14001 compliant facility, thus assuring quality to the utmost.

Our service team of over 200 trained technicians is spread over 30 locations around the country to ensure quick response time and prompt attention.

Standard Leaks that can be sealed using our online process:

  • Flange Joints
  • Pipes and Piping Components
  • Valve Glands

We have also developed effective solutions for several unique leakage problems in equipment such as:

  • Transformers
  • Ball Valves
  • Pressure Seal Valve Bonnets
  • Tank Roof
  • Fin Fan Coolers

We further have the ability to provide custom-engineered solutions based on clients' problem.