The Flexible Grout Tube is designed for use with Spiral Void Former and is formed from a high-speed, medium-duty corrugated plastic. It features a low-friction inner surface and jacket that in the event of fire prevents the propagation of flames. This Flexible Grout Tube enables the filling of the void created by the Spiral Void Former.

✓ minimum compressive strength: 750 N/5 cm

✓ temperature resistance up to +75° C