SG1 coupling gel is a translucent semi water-based glycerinated pink gel, biodegradable.
It was specially developed in order to make ultrasonic testing on yards and wide surfaces easier.
SG1 gel characteristic ensures a good adhesion on pieces to be tested, whatever their position. SG1 excellent wetting enables a very good acoustic transmission even on fatty parts and not perfectly degreased.
SG1 couplant has no corrosive effect on all metals.
SG1 has no effect too on paints, plastic and rubber.
However it shall not be used on composites before repair.
The normal temperature range is 0°C to 50°C, the use is possible at higher temperature but the gel liquefies gradually.
The viscosity increases with evaporation of water.