You can adjust reaction times from 25 seconds to over 5 minutes by varying the percentage of accelerator (Gen Acc). Durability: Estimated lifespan of 70+ years once cured. Limitations SPETEC® PUR F400 | Alchatek
By varying the percentage of Alchatek Gen Cat (accelerator), contractors can fine-tune the set time from a few minutes down to seconds, allowing for precise control in both slow seeps and high-pressure leaks. spetec pur f400
Where standard resins fail, the PUR F400 excels. Its low viscosity allows for deep penetration into micro-cracks and fine soils, creating an impermeable barrier against even the strongest hydrostatic pressure. Whether stabilizing loose ground or sealing active water leaks in underground structures, the F400 offers a robust solution that cures rapidly to minimize downtime on the job site. You can adjust reaction times from 25 seconds
The resin is mixed with 2% to 10% Gen Cat accelerator depending on the desired reaction speed and site temperature. Where standard resins fail, the PUR F400 excels
Using a single-component airless sprayer or hand pump, the resin is forced into the crack at pressures up to 100 bars.
Works excellently with moisture-sensitive PUR – the nitrogen purging option keeps polyols stable. However, highly abrasive fillers (e.g., alumina or silica >40% by weight) cause faster wear on the piston seals; Spetec offers ceramic-lined options as an upgrade.