HIGH Z® Specialty Application Couplants

High Z HV and High Z LV provide the highest acoustic impedance of all Sonotech® couplants.

Both products were formulated to reduce surface noise and improve coupling performance on curved, rough, pitted and corroded surfaces. Their environmentally benign formulas can be removed with water and it will often facilitate flaw inspection and thickness gauging when no other couplant will function.

High Z LV and High Z HV have a ferrous corrosion inhibition rating of 70.

*High Z Couplants discontinued as of August 31, 2018.


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We pride ourselves in providing fast deliveries. However inventory changes rapidly and on occasion some items may not be in stock. If you require an expedited shipment, please contact us via e-mail or call our office to confirm availability of an item. *Nominal lead times vary by product.