Echo 4HT Broad Range Temp Couplant

Echo 4HT Broad Range Temp Couplant

Echo-4HT Fluid Operating Range -70°F to 450°F (-56°C to 230°C) Ultrasonic Couplant

Echo 4HT is a fluid ultrasonic couplant, ideal for pumping and automated crawlers and thickness gauging of smooth or polished surfaces.

Product Description Product Specification

Broad Operating Range: -70° to 450°F (-56° to 230°C)

Water Solube: Easy to remove by wet or dry wiping or water wash.

No "oil slick" when used where couplant may drip into a body of water.

Low toxicity

Compatible with a broad range of material 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.

Environmentally and Operator Friendly - No formaldehydes, nitrates, nitrites or glycol ethers.

Minimal residue

Operating Temperature:
-70° to 450°F (-56° to 230°C)

Auto Ignition Temperature: 628°F (331°C)

Flash Point: 255°F (124°C)

Surface Tension: 36 dynes / cm (mN/m), 77°F (25°C)

Halogens and Sulfar: less than 50 ppm

1-gallon / 3.8 liter cubitainer
5-gallon / 18.9 liter cubitainer
55-gallon / 208 liter drum


Removal: Wipe with wet or dry paper or cloth rag or water wash.

* Current, this is not eligible for export.

Note: ECHO 4HT has been discontinued.

Description Part # Saved Price Select Option Add to
Echo-4HT 1 gallon / 3.8 liter rigid container UT-EU-ECHO-4HT-1 Request Pricing
Echo-4HT 5 gallon / 18.9 liter rigid container, dispensing tap UT-EU-ECHO-4HT-5 Request Pricing