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Thread seal

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Thread seal

Loctite 577®

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Medium-strength, universally applicable thread seal for cylindrical/cylindrical and conical/cylindrical thread pairs. Fills the spaces in the thread, and connections are both secured and sealed.


  • LOCTITE 577 is used for securing and sealing pipes and fittings and other metal thread connections.

  • The product achieves an immediate sealing effect against low pressures in pipe connections made of metal.

  • No creeping, shrinking or fraying.

  • Excellent resistance to chemical and thermal loads, run-off of liquid product after application is reduced.