Urea Tube Encapsulation Protection

The urea tube in diesel vehicles is one of the critical components of the Selective Catalytic Reduction (SCR) system, responsible for transporting the automotive urea solution (AdBlue/DEF) from the urea tank to the injectors in the exhaust pipe. Due to the corrosive nature and crystallization tendency of the urea solution, coupled with complex operating conditions (high temperatures, vibrations, and cold climates), urea tubes are typically protected by multi-layer encapsulation structures. The MBPA low-pressure injection molding solution effectively ensures the safe delivery of the urea solution and prolongs the system's lifespan, making it the preferred choice for urea tube encapsulation.

OurKey Advantages

  • High softening point (190°C)
  • Low hardness (84-94A)
  • Flame retardancy compliant with HB requirements
  • Resistance to ozone, fuel, coolant, and ultraviolet radiation
  • Resistance to high and low-temperature cycling
  • Resistance to urea corrosion

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