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General description

U 55+AC is a powder used for the preparation of a transparent water-based coupling gel, the viscosity of which can be adjusted according to the amount of water used. The gel obtained is suitable for the most common applications under normal conditions of use for both defect and thickness checks. It contains anti-corrosive so as not to affect the surfaces under examination. The product is non-toxic to skin, has no danger labelling and is not harmful to the environment.


200 g envelope plastic bags

Part Number: 01049064

5 kg envelope plastic bags

Part Number: /

In Compliance with

  • ASME V Art.5 (T-533)

  • FAA AC 25-29 (glycerin free)

  • MIL-STD-271

  • PMUC (certificate of compliance upon request)


  • Excellent solubility in water.

  • It allows to obtain: an excellent couplant, suitable for different types of surfaces, with excellent lubricating properties for ultrasonic transducers.

Product Properties


White powder

Recommended dilution in potable water

33 g/l

User Recommendations

NDT Method

Ultrasonic testing

Usage temperature

From 5°C to 80°C

Shelf life

3 years at T between 5°C and 45°C, in a dry place safe from direct sunlight

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    CGM CIGIEMME S.p.A. designs and manufactures a complete range of Magnetic Testing (MT) and Penetrant Testing (PT) systems, from simple equipment to highly customized systems, also offering a complete range of consumables, tools, accessories and instruments used in the MT and PT fields.
    CGM CIGIEMME S.P.A. - N°REG.IMPR., C.F. E P.I.: 05732470967 - N° REA: MI -1843908 - CAPITALE SOCIALE: € 500.000.00 I.V. - powered by 3Bit