Phased Array Couplant

EchoPure

EchoPure is the couplant of choice for Phased Array UT Inspection (PAUT). EchoPure improves defect reproducibility by eliminating dry spots under the wedge and the resulting noise and artifacts. EchoPure is a water-free, water-soluble ultrasonic couplant that has a broad operating range, is slow drying and provides excellent transducer lubrication.

EchoPure:

– complies with P91 steel inspection requirement for a water-free couplant
– is an ideal couplant for very cold inspection (liquid gas piping and refrigerant lines) and will not frost or attenuate at temperatures as low as -60°F
– is an excellent choice for high temperature use such as warm welds up to 350°F and on pipe in the desert summer sun, where slow evaporation and long inspection windows are desired
– has low toxicity and is a good choice for inspection in food processing plants

– EchoPure is the safest commercial NDT ultrasonic couplant. EchoPure is manufactured using only ingredients that are Generally Recognized as Safe (GRAS) as food additives by the US FDA.

Strongest coupling film available.

Very slow drying: Drying time is days or weeks.

Salt stable. Does not thin with corrosion, roadway or marine salts.

Better multi-metal compatibility than most UT couplants.

Does not contain Glycerin

Environment and operator friendly: no formaldehydes, phosphates, silicones, fragrances, nitrates, nitrites, heavy metals, azoles, antimicrobials or fungicides

Safe: all ingredients are approved for incidental food contact

Water soluble

Excellent acoustic properties

Mild ferrous corrosion inhibition less corrosive than water alone

Removal: Wipe with a rag or water wash

Specifications

Operating Range	-60°F to 350°F (-51°C to 176°C)
Viscosity	Low viscosity fluid Medium viscosity fluid High viscosity stiff gel like fluid
Auto Ignition Temperature	700°F / 371°C
Corrosion Characteristic	Meets ASTM F519 Very good
Halogens and Sulfur	Less than 50 ppm
Compliance	ASTM F519 FAA-AC # 25-29 (glycerin-free) NAVSHIPS 250-1500 Nuclear grade (less than 50 ppm Halogens & Sulfur) P91 Steel Inspection – meets requirement for a water-free couplant SME Boiler & Pressure Vessel Code (T-533)
Environment	The most environmentally friendly commercial ultrasonic couplant available.
Packaging	4-oz dispensing pump Carton of (12) 4 oz / 118 ml bottles 1 gal / 3.8 liter, with one bottle, dispensing cap 5 gal / 18.9 liter, two bottles, dispensing faucet 55 gal / 208 liter drum

Safety Data Sheet

Forever Wedge Ultrasonic Couplant won’t dry, run, leach, or dissolve with water or couplants. It will stay in place for months or years until you decide to remove the wedge. Forever Wedge Couplant is not an adhesive and will not bond to the wedge.

Reliable long term coupling of wedges to transducers is a critical technology to insure reproducible results and to eliminate recoupling probes to wedges during inspection.

Forever Wedge Couplant is a high viscosity fluid for phased array and angle beam wedge attachment and for coupling delay lines.

Forever Wedge Couplant lasts for the life of the probe or wedge without hardening or evaporating and yet is easily removed.

Forever Wedge Couplant is impervious to water, heat and light.

Solve your wedge coupling issues once for the life of the wedge.

Non-drying – lasts for years
Very high viscosity – stays in place
Easily removed – does not harden
Impervious to water
Won’t dissolve or leach

Specifications

Operating Range	-50˚ to 700˚F (-45˚ to 371˚C)
Viscosity	5,000 cST Fluid
Sound Velocity	4900 ft/second (1494m/sec)
Auto-ignition Temperature	850˚F (454˚C)
Packaging	2-fluid oz/59 ml bottle
Corrosion Characteristic	N/A