Logiball Lateral Test and Seal Grouting Packers for trenchless rehabilitation of collections systems are used to stop infiltration at lateral connections and in lateral joints all from the mainline sewer access as far as 30 feet from the mainline. They are available for 6- through 144-inch pipe diameters. Packers for elliptical and box culverts are available. Flexible push/pull packers are used to seal the laterals from an above-ground access or laterals coming into manholes. Chemical grouting seals the soil around the injection points, preventing washout of backfill into the sewer and sealing off infiltration. 800/246-5988; www.logiball.com.