Echo 8 HT Fluid

Echo 8 HT Fluid

Echo Ultrasonics

Echo 8 HT™ High temperature ultrasonic coupling fluids are available in four viscosities; Grades 1, 4 and 10.  Performance of a broad range of AUT and MUT ultrasonic flaw and thickness gaging applications from -50°F to 800°F (-45°C to 425°C) is possible with these four grades.

Grade 1 is the lowest viscosity fluid (100 cST) for long or small diameter lines and quick spreading.

Grade 4 is Echo’s standard viscosity fluid (400 cST) and is usually a good compromise between pump ability and run-off at the transducer.

Grade 10 is a very thick fluid (5,000 cST – honey like) for MUT.  It spreads easily over large hot surfaces, stays in place and leaves minimal, if any 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.

Echo 8 HT has low toxicity and is essentially non-irritating


Operating Range -50°F to 800°F (-45°C to 425°C)
Viscosity Fluid ≈ 400 cps
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
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