Ultragel Couplant

Sonotech Ultragel II, One Case of Twelve 12 oz Bottles

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High Performance Ultrasonic Couplant

Ultragel II is an industry-leading, high-performance, ultrasonic couplant for flaw detection and sizing, thickness gauging, flow metering and acoustic emission testing.

Ultragel II is widely recognized as the industry's most dependable and popular ultrasonic couplant. This general-purpose medium viscosity gel is known for its outstanding performance, excellent corrosion protection, thixotropic properties and comprehensive range of specifications and approvals.

Ultragel II is Pratt & Whitney approved and meets nuclear grade specifications for halogen and sulfur levels.


  • Clings well to vertical and overhead surfaces
  • Wide range of specifications and approvals
  • Highest corrosion protection
  • Thixotropic gel
  • Thixotropic gel
  • Great surface wetting
  • Slow drying for longer inspection time
  • Nuclear grade
  • Provides good transducer lubrication
  • Aerospace approvals
  • Increased acoustic impedance reduces surface noise
  • Hydrogen embrittlement testing
  • Compliance:

    • API, ASME, ASTM F519, ASTM F945, ASTM F945 or PWA 36604, MCL E-205 Type II, AWS, Pratt & Whitney PMC 4384