SealGuard HyperFlex Hydrophobic Grout 12 Pack Part No. SG-HF12 Instantly stop water infiltration, with a closed cell hydrophobic grout that does not shrink. * Pre-catalysed * No mixing required * Non-shrinking HyperFlex is supplied ready to use in 300 ml tubes - there's no component mixing and so absolutely no guesswork. Just a simple and effective premixed grout. Compared to the more aggressive SealGuard product, Hyperflex is better suited to more widespread lower flow rate infiltration. The product has been successfully field tested on cracked or honeycombed concrete, voids between walls and the floor or ceiling, expansion joints, cold joints, pipe intrusions and any other void which needs to be filled. This total effectiveness, and flexibility with such a range of materials, means HyperFlex is excellent for repairs in tunnels, manholes, concrete dams, car park decks, bunds, culverts or anywhere else. HyperFlex is approved to NSF 61-2007 for contact with potable water.