Echo Ultrasonics LLC.

UT couplants for all ambient and elevated temperature inspections. From the most economical couplant to the highest performance to water-free couplants for phased array, we can help you select the right couplant for every inspection.

Signal™ 

The longest lasting water-based ultrasonic couplant with the highest acoustic performance above 5 MHz.  

SuperSoniX™

The best water-based high performance couplant with a broad operating range and slow evaporation rate.

EchoPure™

The most universal water-soluble / water-free UT couplant and the couplant of choice for Phased Array Manual UT inspection. Very slow drying and ideal for very cold and elevated temperature inspections.

UltraSoniX™

A high performance, glycerin-free ultrasonic couplant that is compatible with most materials, has excellent ferrous corrosion inhibition and does not contain formaldehyde or glycol ether.

SoniX™

The best choice for a low-cost general purpose ultrasonic couplant with a strong coupling film strength that is slow drying.

Glycerin Couplant

GE approved for CFM56-7B engine fan blade inspection (GLY-16 lot 205).  Can be used as a general purpose couplant, and is especially suited for rough surfaces and highly attenuating materials.

Preventing inspector injury, facility shutdown and the risk of igniting explosive gasses, Echo Ultrasonics has the most complete offering of high temperature couplants for inspections over 350°F. The right operating range and viscosity couplant may improve safety, lower cost and reduce inspection time. Selection of the right couplant for high temperature inspections is critical. If you aren’t sure which couplant is best, ask us.

VersaSonic®

• -10 to 700°F (-23 to 371°C)
• No wait time / Fast readings

HiTempco+

• -50˚ to 850˚F (-45˚ to 455˚C)
• Very high viscosity
• Minimal residue
• Non-drying

EchoTherm™

• -40 to 1250°F+ (-40 to 675°C)
• Auto-ignition temperature above 1300°F
• Most economical ultra-high temperature couplant

EchoTherm Extreme™

• -40 to 1250°F+ (-40 to 675°C)
• Highest performance extreme temperature couplant
• Auto-ignition and flash point above 1300°F
• No wait time / fast readings

High Temperature Couplant Comparison Table

View pdf for High Temperature Couplant Comparison Table

High Temperature Couplant Comparison Table

Echo offers the broadest range of range of fluid UT couplants for AUT inspections. Selection criteria include viscosity, temperature range and water solubility requirements. Echo has fluid options for use in very cold environments, such as the Tundra, for hot applications, such as refineries and ambient temperature inspections such as storage tanks. View the fluid selection chart below.

Echo 6 HT™

• Low-cost silicone based high-temperature UT fluid
• Replaces plant-based oils (peanut and canola) and mineral oils
• Operating Range: -40° to 675°F (-40° to 357°C)

Echo 8 HT™ Fluid for AUT and Robotics

• Most universal AUT fluid
• Broadest operating range
• (-50 to 800ºF / -45 to 425ºC)
• Three viscosity grades

EchoFLOW™ Fluid

• Ideal fluid for cold environments
• Approved for use in critical environments
• Operating Range: -40° to 240°F (-40° to 115°C)

Echo 3HT Fluid

• When water won’t work, Echo 3HT is the next step.
• Operating Range: -30° to 350°F (-34° to 177°C)
• Pumpable Range: 35˚ to 350˚F (2˚ to 177˚C)

Fluid Selection Chart

• View a pdf of the Echo Fluid Selection Chart.

Reliable coupling of transducers to the inspection part and the transducer to the wedge is critical technology to insure reproducible results and to eliminate recoupling probes to wedges during an inspection. EchoPure and Forever Wedge ultrasonic couplants are the solution for phased array inspections.

EchoPure™

• The most universal water-soluble / water-free UT couplant and the couplant of choice for Phased Array Manual UT inspection. Very slow drying and ideal for very cold and elevated temperature inspections.

Forever Wedge

• For use between phased array or angle beam transducers and the wedge
• Lasts the life of the wedge or until it is replaced
• Won’t leach out, impervious to water and couplants
• Easy removal and replacement of wedges
• Eliminates PA element drop out due to wedge couplant failure
• Non-toxic

Special Application Couplants: For difficult inspections that require high acoustic impedance, shear wave, reduced surface noise or extended service life for sensors, we have the right couplant.

Echo Shear Wave

• Normal incidence (zero degree) shear wave
• Water soluble
• Easy to remove
• Low toxicity

Echo 8 ZH™

• Enhanced acoustic impedance
• Reduces rough surface noise
• For flow metering and long-term monitoring

Echo Z+™

• Ideal for rough surfaces and concrete
• High acoustic impedance
• Decreases surface noise
• Very high viscosity