Product Description

Prime Kat is our proprietary catalyst used to adjust the reaction time of Prime Resins’ hydrophobic polyurethane injection resins, including Prime Flex 910, 920 and 940. It is used in a concentration between 1/2% to 10%, depending on the desired reaction time.


66-oz unit (two 33-oz bottles in a box)

Boxes of Prime Kat, the catalyst used with hydrophobic polyurethane grouts.

Prime Kat is the catalyst used with Prime Resins hydrophobic polyurethane grouts.

5 gallon pail


Made in the U.S.A.

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Prime Flex 910

Prime Flex 910 is a very low viscosity, hydrophobic, single-component polyurethane resin that reacts with moisture when injected into soil to form a rock hard, water-tight mass. Used to stabilize loose soil or sand, stop underground water flows and seal leaking seawalls.

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Prime Flex 920

Stop gushing leaks. Stabilize loose soils. Low viscosity, hydrophobic, water-activated polyurethane resin is also verified to meet NSF/ANSI Standard 61 for contact with potable water. Great for seawalls and municipal water utility use.

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