Loctite 641

LOCTITE® 641 is designed for the bonding of cylindrical fitting parts, particularly where disassembly is required for servicing operations. Ideal for parts that need subsequent dismantling, i.e. retention of bearings on shafts and in housings

  • Low Strength Bearing Retainer (1700 Psi)
  • Fills Gaps upto 0.15mm
  • 150oC Service Temperature
  • Prevents loosening and leakage from shock and vibration

Additional information



  • Prevents loosening: It fills all gaps between the cylindrical components and cures into a hard thermoset plastic. This unitizes the assembly and prevents loosening and leakage from shock and vibration
  • Augments press fit
  • Recommended for parts that will need subsequent dismantling, eg retention of bearings on shaft and into housing
Tech Specifications
Gap Fill Up to 0.15mm
Shear Strength (N/mm2) 1700 psi (11.7)
Temperature Resistance (Continuous) 150oC
Cure Time (Setup/Full Strength) 20 min/24 hour


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