Prime Flex 900 XLV polyurethane resin is a low viscosity, hydrophilic resin that reacts with water and expands to form a closed cell, watertight foam. It is typically injected under pressure to seal actively leaking joints and cracks in concrete structures, including hairline cracks. This product is independently tested and proven to meet NSF/ANSI Standard 61.5 for contact with potable water.
Up to 600% expansion (unconfined)
Low viscosity will penetrate tight cracks
Extremely tough and flexible. Can expand and contract parallel to the crack in varying temperatures.
Prime Resins Prime Flex 900 XLV is a single-component, water-activated, hydrophilic, extra low viscosity, polyurethane injection resin. This extremely fluid liquid resin reacts with water and expands to form a closed cell, watertight foam. Prime Flex 900 XLV is used to seal actively leaking joints and cracks in concrete. Up to 600% expansion. NSF/ANSI Standard 61 compliant for contact with potable water. 2:1 "Quick Mix" cartridge.