ETI Injection Epoxy

ETI injection epoxies are specially designed formulations for the injection of cracks in concrete. ETI epoxies are two-component, high-solids formulations. They are available in side-by-side cartridges and are dispensed through a static mixing nozzle using a standard dispensing tool. ETI is available in three viscosities: ETI-LV (low viscosity), ETI-GV (gel viscosity) and ETI-SLV (superlow viscosity) to handle a wide range of crack widths. Properly installed, they provide a repair that is both waterproof and high strength (structural).

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Injection Epoxy
16.5 oz. Cartridge

Injection Epoxy
22 oz. Cartridge

Injection Epoxy
22 oz. Cartridge


EMNO22 Opti-Mix®
Mixing nozzle

Manual dispensing tool for 22 oz. cartridges
(Conversion parts for 2:1 ratio dispensing are included; required for ETI-SLV)

Pneumatic dispensing tool for 22 oz. cartridges

Caution - The ETI-LV and ETI-SLV must be used with the Opti-Mix® nozzle (EMN022) for proper mixing. ETI-GV may also be used with the EMN22 mixing nozzle for gravity feed applications in large cracks.


  • Chemically bonds with the concrete to provide a structural repair (meets the requirements of ASTM C 881 as a structural repair epoxy)
  • Seals the crack from moisture, protecting rebar in the concrete from corrosion and flooring from moisture damage
  • All viscosities formulated for maximum penetration under pressure
  • Side-by-side cartridge dispensing provides reliable mixing and ratio control when used with the Opti-Mix® static mixing nozzle
  • Eliminates the need for expensive bulk dispensing equipment
  • Suitable for pressure injection or gravity-feed applications
  • Non-shrink material resistant to oils, salts and mild chemicals

ETI-SLV Super-Low Viscosity Injection Epoxy

  • Super-low viscosity (350 cps) for repair of hairline cracks and cracks up to 1/4"
  • Penetrates the smallest cracks
  • Suitable for structural repairs

ETI-LV Low Viscosity Injection Epoxy

  • Low viscosity epoxy (1790 cps) for repair of fine to medium width cracks 1/64" - 1/4" in width
  • Low surface tension allows the material to effectively penetrate narrow cracks
  • Suitable for structural repairs

ETI-GV Gel Viscosity Injection Epoxy

  • Gel viscosity epoxy for repair of medium cracks 3/32" - 1/4" in width
  • Decreases in viscosity under pressure for increased flowability
  • Suitable for structural repairs



Injection epoxies are suitable for repairing non-moving cracks in concrete walls, floors, slabs, columns and beams. They can be used to inject cracks in damp or wet conditions (water cannot be flowing out of crack) with excellent results. Apply to concrete 40°F or above. For best results, warm material to 60°F or above prior to application.


ETI usage



IMPORTANT For injection instructions, click here.


24 months in unopened cartridge.


  • ETI-SLV: Meets the requirements of ASTM C 881 Type I, and IV, Grade 1, Classes B & C.
  • ETI-LV: Meets the requirements of ASTM C 881 Type I, II, IV and V, Grade 1, Classes B & C. Approved under NSF/ANSI Standard 61 (22 in2/1000 gal).
  • ETI-GV: Meets the requirements of ASTM C 881 Type I, II, IV and V, Grade 3, Classes B & C.


For best results, store between 45°-90° F


Resin - white, hardener- black.

When cured:
ETI-SLV, ETI-LV: Black, ETI-GV: Gray


Removal of cured adhesive – Chip or grind off surface. Uncured Adhesive – Wipe up with cotton cloths. If desired, scrub area with abrasive, waterbased cleaner and flush with water. If approved, solvents such as ketones (MEK, acetone, etc.), lacquer thinner, or adhesive remover can be used. DO NOT USE SOLVENTS TO CLEAN ADHESIVE FROM SKIN. Take appropriate precautions when handling flammable solvents. Solvents may damage surface to which they are applied.


Very good to excellent against distilled water, inorganic acids and alkalis. Fair to good against organic acids and alkalis, and many organic solvents. Poor against ketones.

ETI Cartridge System
ETI Cartridge System
  1. Bulk containers also available, contact Simpson Strong-Tie for details.
  2. Use only appropriate Simpson Strong-Tie® mixing nozzle in accordance with Simpson Strong-Tie instructions. Modification or improper use of mixing nozzle may impair epoxy performance.
  3. EDT22S toolneeds to be configured for 2:1 cartridge ratio.
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© 2015 Simpson Strong-Tie Company Inc.