Echo Ultrasonics Echo 3HT™ Fluid

Echo 3HT™ Fluid is a versatile, water-soluble ultrasonic couplant designed for inspections where water alone is insufficient. It performs reliably across a broad operating range of -30°F to 350°F (-34°C to 177°C), making it ideal for low- and intermediate-temperature ultrasonic inspections.

With low viscosity that remains pumpable down to 35°F (2°C), Echo 3HT™ Fluid ensures excellent surface wetting and consistent coupling on metals, plastics, and composites. It leaves minimal residue, is slow-drying, and contains no glycerin, preventing interference with subsequent penetrant inspections.

Environmentally and operator-friendly, Echo 3HT™ Fluid contains no formaldehydes, nitrates, nitrites, or glycol ethers, and can be easily removed with a wet or dry cloth or a water rinse. It is perfect for technicians seeking reliable, residue-free ultrasonic coupling without compromising safety or inspection quality.

 

Specifications 

Operating Range	-30 °F to 350°F (-35°C to 176°C)
Viscosity	Fluid
Halogens and Sulfur	Less than 50 ppm
Packaging	1 gal / 3.8 liter rigid container 5 gal / 18.9 liter rigid container

Features

• Broad operating range -30 °F to 350°F (-34°C to 177°C)
• Water soluble: easier to remove than most fluid ultrasonic couplants
• No “oil slick” when used where couplant may drip into a body of water.
• Lowest viscosity fluid that remains pumpable down to 35°F / 2°C
• Compatible with a broad range of materials including most metals, plastics and composites
• Good Surface wetting due to low surface tension and solvent properties.
• Slow Drying at ambient temperatures
• Contains no glycerin which can interfere with subsequent penetrant inspection.

Parts Numbers Parts Numbers Packaging - 1 gal / 3.8 liter rigid container Packaging - 5 gal / 18.9 liter rigid container

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