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Echo 8 HT™ Fluid for AUT and Robotics

Echo 8 HT™ is a line of high-temperature, slow-drying ultrasonic coupling fluids engineered for safe, reliable performance in AUT and MUT flaw detection and thickness gauging applications. With an operating range from -50°F to 800°F (-45°C to 425°C), Echo 8 HT™ delivers consistent coupling across a wide range of high-temperature inspection environments.

Echo 8 HT™ is available in three viscosity grades to match system requirements and inspection conditions. Grade 1 offers low viscosity for long or small-diameter lines and fast spreading. Grade 4, the standard viscosity, provides an optimal balance between pumpability and run-off at the transducer. Grade 10 is a very high-viscosity fluid designed for MUT applications, spreading easily over large hot surfaces while staying in place and leaving minimal residue.

All grades of Echo 8 HT™ provide excellent corrosion inhibition on ferrous metals, leave minimal residue, and are compatible with all metals and most plastics, making them ideal for automated, robotic, and manual ultrasonic inspections in demanding high-temperature environments.

Specifications 

Operating Range

-50°F to 800°F (-45°C to 425°C)

Viscosity ≈ 400 cps, Fluid
Grades Grade 1, lowest viscosity, 100 cST, Grade 4, standard viscosity, 400 cST, Grade 10, very high viscosity, 5,000 cST for MUT
Sound Velocity 4900 ft/sec (1494 meters/sec)
Specify Gravity 1.07
Weight/gallon

8.91 pounds/4.04 kg net

Packaging
  • Quart / .95 liter rigid container
  • 1 gal / 3.8 liter rigid container
  • 5 gal / 18.9 liter rigid container
Features
  • Echo 8HT three grades offer viscosity options
  • Excellent corrosion inhibition on ferrous metals
  • Minimal residue
  • Compatible with all metals and most plastics
Download Spec Sheet