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UltraSoniX High Performance Ultrasonic Couplant

UltraSoniX High Performance Ultrasonic Couplant

Our most popular general purpose couplant.

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  • UltraSoniX is a high-performance couplant, available in two viscosities: High viscosity couplant remains in place on vertical and overhead surfaces. Medium viscosity for spreading.
  • 10°F to 220°F (-12°C to 104.4°C) temperature range for most flaw detection and thickness gaging applications.
  • Water-soluble: easy to remove
  • Environment and operator-friendly – no formaldehyde, nitrates, nitrites, or glycol ethers.
  • Lower residue than most UT couplants.
  • Meets FAA Advisory Circular AC 25-29 which states: Procedures need to ensure glycerin is not used on aluminium materials, as it may cause corrosion.
  • No glycerin as required for carbon fiber composites.
  • Removal: Wipe with wet or dry paper or cloth rag or water wash.


  • Operating Range
    10°F to 220°F (-12°C to 104.4°C)
  • Viscosity
    Medium (standard) ~60,000 cps, flowable gel
    High ~ 165,000 cps, stiff gel
  • Halogens and Sulphur
    Less than 50 ppm
  • pH
    8.0 nominal at 20°C
  • Compliance
    ASME Boiler & Pressure Vessel Code (T-533)
    ASTM F519
    Conforms to FAA Circular Advisory AC No: 25-29
    NAVSHIPS 250 – 1500
    Nuclear grade (less than 50 ppm Halogens & Sulfur)


  • 4-oz/118 ml bottles
  • 8-oz/236.6 ml bottles
  • 12-oz/355 ml bottles
  • 1 gal / 3.8 L, with one bottle, dispensing cap
  • 5 gallon / 18.9 L, two bottles, dispensing faucet
  • 55 gal / 208 L drum

Developed by the original creators of the Sonotech range, UltraSoniX replaced Ultragel II in our range of couplants.

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