Magnaflux Ultrasonic Couplant Pyrogel 100

Wide Temperature Range Ultrasonic Couplant

Pyrogel® is a broad temperature range couplant for thickness gauging, flow metering, acoustic emissions testing and flaw detection/sizing. These products contain no polymers and resists drying, making them an excellent choice for long term flow metering applications.

Pyrogel comes in two different viscosities, Pyrogel 7 which is a very thin, flowable liquid and Pyrogel 100 which is a thick gel.

Pyrogel 7 recommended temperature range is -50 to 730°F / -45 to 388°C.

Pyrogel 100 recommended temperature range is -50 to 805°F / -45 to 429°C.


  • Broadest temperature range
  • Non-drying for long-term coupling or extended inspection time
  • Good choice for long-term flow metering
  • Excellent long-term corrosion inhibition
  • Pyrogel 100 clings well to vertical and overhead surfaces
  • Specifications 
  • Container Size & Part Number 
  • Applications 
  • Use Recommendations 


  • API
  • ASME
  • AWS

Container Size & Part Number

Pyrogel 7

1 gal / 3.78 L cubitainer..................................21-901


Pyrogel 100

4 fl oz / 118 mL tubes (case of 6)...................24-6XT04

1 gal / 3.78 L cubitainer..................................24-901


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Defect location: subsurface

Ideal for:

  • Flaw detection
  • Thickness gauging
  • Acoustic emission testing
  • Corrosion testing
  • Long-term flow metering
  • High temperature ultrasonic testing
  • Power generation boilers
  • Transmission pipes
  • Pressure vessels
  • Pipes, tubular goods, casing and connections
  • Low temperature locations
  • Long-term coupling


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Use Recommendations

NDT Method: Ultrasonic Testing

Required Equipment: UT equipment, transducer

Temperature Range:

  • Pyrogel 7: -50 to 730°F / -45 to 388°C
  • Pyrogel 100: -50 to 805°F / -45 to 429°C

Compatibility: Most composites and metals


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Sono 1100

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