Kop-Flex
FAST'S Gear Type Coupling
FAST'S Gear Coupling
This unique coupling design dates back to the early 1900's.  It was invented in 1918 by Gustav Fasts, and is still the coupling of choice in many for the world’s most coupling of choice in many for the world’s most demanding applications.
  • Sizes 1 ½ through 30
  • Shrouded or exposed bolt sleeves
  • 300% Greater lube capacity than O-Ring styles
  • All metal end ring
  • 2 to 3 Times the life vs. O-Ring style
  • Maximum bore up to 36” (914 mm)
  • Torque capacity up to 51 million lb-in. (5650 kN-m)
  • Available in slide, mill motor, and other custom design styles
  • ABS and DNV approved designs