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Sure-Flex® Plus Couplings

30% Increased Torque Rating

For over 50 years, TB Wood's has led the coupling industry with the original TB Wood's Sure-Flex® design. And we haven't stopped innovating: this industry favorite just got even better.

Best-in-class for coupling performance and value

Our new Sure-Flex® Plus EPDM and Neoprene sleeves are best-in-class for coupling performance and value. Their 4-way flexing action absorbs virtually all types of shock, misalignment, and end float. With Sure-Flex couplings, the need for lubrication and maintenance is eliminated. As a result, these couplings provide clean, dependable, and quiet performance for a variety of applications.


  • High Torque Rating - 30% Increased Torque Rating
  • Longer Life - Sure-Flex Plus Lasts Over 3X Longer than the Competition
  • Better Value - Save Money Using a Smaller Coupling
  • Interchangeable - Retrofits to Existing Flanges
  • Our coupling design has been copied by others but never equaled!
  • Highly flexible element = long equipment life & low vibration.
  • Superior rubber compounds provide unequaled performance.
  • No lubrication = low maintenance.
  • Quick & easy installation. No bolts, gaskets, covers, or seals.
  • Widest selection of sizes and styles on the market.
  • Standard AGMA clearance fits and keyways.

TB Wood's Sure-Flex® Couplings

SureFlex® Plus Flyer

Sureflex Plus Savings Calculator

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Sure-Flex® Plus Couplings Video