loctite Thread sealant Suited for a wide range of applications, LOCTITE thread sealants increase the reliability of threaded fittings.

To find the ideal Loctite for your thread sealing need, just answer three whats:

  • 1 Substrate to be sealed
  • 2 Maximum thread size
  • 3 Temperature resistance
LOCTITE® 542 Hydraulic & pneumatic
Ideal for fine threads
  1. Substrate to be sealedMetal

  2. Maximum thread sizeup to 3/4"

  3. Temperature resistance* 150°C

Additional features

  • Immediate low pressure seal – 100 psi or 0.69 N/mm2
  • Maximum Pressure Resistance (N/mm2)/Cure Time- 10,000 psi or 68.9 N/mm2
  • Product Type- Brown Liquid
  • Ideal for fine threaded fittings as used in hydraulic and pneumatic installations and small fittings in general
  • Cure time for full strength: 24 hours
Loctite 567
Excellent Solvent & Thermal Resistance
  1. Substrate to be sealed Metal (even stainless steel & aluminum)

  2. Maximum thread size up to 3"

  3. Temperature resistance* 250°C

Additional features

  • Immediate low pressure seal – 100 psi or 0.69 N/mm2
  • Maximum Pressure Resistance - 10,000 psi or 68.9 N/mm2
  • Product type - White paste
  • Ideal for tapered pipe threads and fittings, including high pressure applications
  • Cure time for full strength – 72 hrs
Loctite 577
For coarse threads
  1. Substrate to be sealed >Metal

  2. Maximum thread size up to 3"

  3. Temperature resistance* 180°C

Additional features

  • Immediate low pressure seal – 100 psi or 0.69 N/mm2
  • Maximum Pressure Resistance-10,000 psi or 68.9 N/mm2
  • Product Type- Yellow Paste
  • Ideal for use on coarse, threaded components
  • Cure time for full strength – 72 hrs
Loctite 55
Instant seal
  1. Substrate to be sealed Metal, Plastic or Both

  2. Maximum thread size up to 4"

  3. Temperature resistance* 150°C

Additional features

  • Instant Seal
  • Maximum Pressure Resistance - 10,000 psi or 68.9 N/mm2
  • Sealing Cord

*Continuous Service
**The torque required to loosen the assembly is breakloose torque and the torque needed to turn the fastener by 180° is prevail torque

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