Sonotech Echogel

Sonotech Echogel

Sonotech Echogel

An Industry standard since 1974, ECHOGEL is an economically priced couplant for flaw inspection in volume use.ECHOGEL offers outstanding wetting capabilities and will quickly wet oily and dirty surfaces. ECHOGEL resists viscosity breakdown on salt-caked boiler surfaces. It is recommended for inspection of power generating boilers when salt cake is present.

ECHOGEL meets the Halogens and Sulfur requirements specified in NAVSHIPS MIL-STD-767. ECHOGEL meets ASTM F519 Hydrogen Embrittlement test on high strength steel.


  • Excellent wetting capabilities; will quickly wet oily or dirty surfaces
  • Resists viscosity breakdown on salt-caked boiler surfaces
  • Available "Winterized" to a working temperature of -20° F
  • Meets nuclear specifications for halogens and sulfur
  • Water-based and water-soluble

Technical Specifications:


Grade 10: ~3,000 cps

Grade 14: ~25,000 cps

Grade 20: ~65,000 cps

Grade 30: ~160,000 cps


1.55±.05 mm/µsec

Acoustic Impedance:

1.60±.05 MRayls

Temperature Range:

27° to 150° F
3° to 66° C
Available Winterized
-20° F (-29° C)

Water soluble:



7.5 to 9.0



Halogens (as Chlorides):

< 50 ppm


< 50 ppm

* Viscosity equivalents: 4,000k = thick paste, 550k = stiff gel, 150k = pourable gel, 20k = thick liquid

Grade 10 is available in 55 gallon drums only - please call for price for more information

Grade 30 is available by custom order only in 55 gallon drums (minimum order 3 drums) - please call for price for more information.

Please call for quantity pricing.

Note: Minimum Order of $60.00

Description Part # Saved Price Select Option Add to
Sonotech Echogel Grade 20 - 1 gallon (minimum 2) UT-SO-48-901 $49.00
Sonotech Echogel Grade 20 - 5 gallon UT-SO-48-905 $122.00
Sonotech Echogel Grade 20 - 55 gallon UT-SO-48-955 $527.00