Henkel Adhesive Technologies

Thread sealants

Learn more about thread sealants.

  • Thread sealants

    LOCTITE 567
  • Thread sealants

    LOCTITE 545
  • Thread sealants

    LOCTITE 577

Pipe leaks? LOCTITE® thread sealants are the solutions

Pipe and fluid fitting leaks can bring operations to a standstill. LOCTITE® thread sealants are the preferred solution for many applications across industries to secure pipes, hydraulic systems, and other connections from fluid leaks. LOCTITE® has long been a trusted brand for adhesive and sealant technology, helping customers eliminate downtime and reduce costs.

LOCTITE® thread sealants achieve a tight seal as the anaerobic thread sealant cures when there is an absence of air, and it comes into contact with metal surfaces. It’s ideal for preventing leaks created by vibration, changing pressure, or changing temperatures. Their ease of application, quick cure time, and cost-effectiveness make them the ideal solution in industrial maintenance and assembly applications.

Moreover, LOCTITE® thread sealants do not creep, shrink or contaminate systems. They are a dependable replacement for tape, putties, pipe dopes and paste sealants, and also protect threads and fittings against corrosion. They’ve been developed to withstand a wide range of temperatures and pressures and are available with potable water and gas approvals.


What LOCTITE® thread sealant can meet my needs?

Henkel offers a range of different LOCTITE® thread sealant chemistries and compositions that cover the needs of industrial maintenance and assembly professions.

Henkel’s LOCTITE® thread sealant line includes silicone thread sealants used to seal plastic pipes as well as anaerobic resin compounds which prevent leaks on metal pipes even after thermal cycling and vibration. These thread sealants are able to withstand shocks and vibrations while maintaining secure seals. Additionally, Henkel offers a line of high-temperature thread sealants that can withstand high temperatures, preventing leaks and corrosion in even the most extreme conditions.

Contact the LOCTITE® team to see what LOCTITE® thread sealants can do for your operation.

When should I use a thread sealant?

Thread sealants are used wherever threaded parts require filling in order to maintain both low- and high-pressure seals within liquid and gas piping systems. They are integrated into systems within chemical processing plants, petroleum refining facilities, pulp/paper factories, waste treatment centres, and textile manufactories, as well as being used in a broad range of utility plumbing applications. LOCTITE® thread sealants ensure superior sealing up to the burst pressure rating of most pipe systems when fully cured.

Pipe connections

Anaerobic pipe sealants are used within a broad range of industrial plant applications, during both installation and subsequent repair and maintenance. Sealing all types of metal tapered pipe threads, fittings, and connections, the LOCTITE® range of anaerobic pipe sealants are used effectively within highly demanding environments such as the chemical processing, oil & gas refining, pulp/paper, waste treatment, textile, utilities/power generation, marine, automotive, gas compression and distribution industries.

Hydraulic systems

Hydraulic systems require superior thread sealants designed to work at high pressures. LOCTITE® thread sealants are designed to function under significant stress from environmental factors, delivering durable sealing during assembly and maintenance of hydraulic systems. Used within hydraulic hoses and stainless-steel pipes and fittings, they are also designed not to clog filters or otherwise contaminate hydraulic fluids like traditional putties, pastes, and PTFE tapes.

What are the industrial applications?

Thread sealants are applied to systems within a broad range of industries, with fast and efficient application making LOCTITE® solutions the go-to choice. Each of our industrial-grade thread sealants helps prevent leaks and keep your equipment running efficiently even within the most challenging environments. Discover the applications below.


Thread sealants for the automotive industry are essential to water pump and coolant systems, ensuring engines run efficiently and safely. LOCTITE® thread sealants are suited to a broad range of applications within the automotive industry, including specialist hydraulics and fluid power systems. Additionally, our automotive thread sealants are highly durable and able to withstand challenging environmental conditions.


Anaerobic pipe sealants are commonly found within both domestic and industrial plumbing systems, with LOCTITE® thread sealants effectively replacing pipe dopes, putties, and PTFE tapes. This ensures less stress on pipe connections and greater longevity once installed. Quick cure times make working fast and efficient, with strong leak protection assured.


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