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Ultrasonic Flaw Detection >> Couplants >> High Temperature Couplants
Sonotech : Sono 600
High Temperature Couplant

SONO 600 is a biodegradable formula that provides extended temperature and non-drying coupling for thickness gaging, acoustic emission testing, and flaw inspection in petrochemical, power generating and with food processing machinery, pharmaceutical manufacturing and storage equipment.

   Click Tech Info Button for a Guide to Couplant Selection

SONO 600 Gel

- Excellent corrosion inhibition

- Very slow drying; allows for long-term coupling without reapplication

- Economical alternative to silicone based couplants

- Biodegradable formula suitable for food processing equipment inspection

- Certified for Halogens and Sulfur less than 150 ppm

- Sono 600 is available as either a Base Fluid (BF), Fluid (F) or a Gel (G)

- No Perfluorocarbons


Technical Specifications
Thickness Gaging *
(Less than 15 Second Contact)
0° to 600°F
-18° to 315°C
Flaw Detection*
(1 - 5 Minute Contact)
50° to 500°F
10° to 260°C
Smoke Point
(Dense Plume)
Auto-Ignition Temperature Gel: 935ºF (501ºC)
Viscosity** Gel: ~500,000cps
Velocity 1.50± .05 mm/µsec
Acoustic Impedance 1.35 to 1.40 MRayls
Water soluble NO
Humectant NO
Halogens < 50 ppm
Sulfur < 50 ppm

* A couplant's upper temperature range for short duration thickness gaging is higher than when used for flaw detection. When testing on vertical or overhead surfaces, a thicker grade of couplant is likely to stay in place, but thinner grade generally performs better on flat surfaces. No Sonotech couplants contain perfluorocarbons; thus "polymer plume fever" is not an operator hazard. Hot couplants can cause burns; therefore, gloves and goggles are recommended when working with hot surfaces.

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

Please call for quantity price.

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Model Description Part No. Price Add To Cart

Sono 600

Sono 600, 4 oz. Tube


Please email us or
call 1-800-635-9108 or 913-432-7080
for current pricing.

Sono 600

Sono 600, 1 Gallon


Please email us or
call 1-800-635-9108 or 913-432-7080
for current pricing.

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