Sonotech Echogel 20
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Echogel is a Glycerine and Silicone-free couplant formulated for use in inspections where salt cake or metal corrosion salts are present. Echogel resists viscosity breakdown on salt-caked boiler surfaces and other corroded materials and contains a ferrous corrosion inhibitor with a relative effectiveness rating of 65. Operating temperature range: 27° to 140° F.