Game-changing HYMAX® HLD 14″-60″ coupling solutions offer innovative engineering and design, enabling fast stab-on installation, improving workers’ safety and eliminating under-digging and losing bolts in the mud.


  • Only 4 bolts!
  • Extra wide range of 2.1″
  • Up to 4° dynamic deflection on each end, reducing future pipe damage
  • Patented hydraulically-assisted gasket with 2-stage sealing
  • Suitable for all types of pipes – ductile iron, cast iron, steel, copper, PE, PVC, AC, GRP
  • Maximum working temperature of 125°F.

These unique advantages, along with its outstanding flexibility and extreme durability, make the HYMAX® HLD the cost-effective, high-performance choice for a wide range of field applications. HYMAX game-changing wide-range couplings have been proven in millions of installations in North America.

NEW from Krausz USA:

  • HYMAX products sizes 14″ to 24″ in all configurations are now available with NBR gaskets in addition to EPDM.
  • HYMAX MTO products (Made to Order) can now be ordered with NBR gaskets in sizes 26″ to 60″

For HYMAX product installation instructions and individual specification sheets, please follow the product pages.

See Case Study  – How HYMAX HLD accommodates oval pipe – in East Greenbush, NY.

To order a Lunch N’ Learn free educational session at your location click here.


See Installation Video
See Product Video
To order a Lunch N’ Learn free educational session at your location click here.
pdf HYMAX Coupling Installation Instructions (14" - 60")
pdf Appendix for Installing a HYMAX Coupling with Insulating Boot
pdf HYMAX Coupling Specification Sheet