DEF Flex Connectors are designed and manufactured to meet the specific corrosive environments encountered when transferring Diesel Exhaust Fluid (DEF).

Downloadable Drawings

Drawings for these connectors are available below for immediate download in PDF format (IGS format available upon request). Simply click the type of connector you are looking for. All diameters and lengths are included in the PDF files.


Stainless Steel Hex Males Each End


Stainless Steel Hex Male x Stainless Steel Female Union


Stainless Steel Hex Male x Stainless Steel Hex Male QuickClamp

Hose Master DEF Flex Connectors Feature

  • 100% stainless steel construction for optimal corrosion resistance
  • Proprietary tube seam weld technology resists oxidation
  • Strongest fitting attachments ensured by ASME IX certified welders
  • Increased flexibility and service life from Hose Master’s proprietary hydroforming process
  • Available in styles as shown left, or with a variety of industrial stainless steel fitting options. Please consult Hose Master inside sales for details
  • Connectors are also available in QuickClamp designs (shown left) and include stainless clamp with special peroxide-cured EPDM gasket*

DEF Flex Connector Applications

  • Mobile skids
  • Above ground totes and storage tanks
  • Underground storage tanks
  • DEF concentrations recognized by ISO 22241-1 and API DEF Certification standards

* Peroxide-cured EPDM gaskets are NOT interchangeable with standard QuickClamp gaskets

DEF Flex Connector Specifications


  • Other sizes, lengths and stainless end connections are available upon request.
  • FireShield connectors are not recommended for DEF service and do not carry UL-approval for that application

Hose Master places emphasis on continual improvements within our manufacturing processes, product offering and services. Hose Master reserves the right to make changes without further notice to any products contained herein.