The Simpson Strong-Tie ETIPAC2G10 Crack-Pac Injection Epoxy is a 9 oz. low-viscosity concrete repair epoxy cartridge made for repairing non-structural cracks in concrete. This is a crack injection epoxy designed for concrete crack repair in walls, floors, slabs, columns, and beams. Model Number: ETIPAC2G10. If you need an epoxy that can get into narrow cracks and help stop moisture intrusion without dragging out specialty dispensing equipment, this is the right kind of product.

Where this cartridge matters is in the crack range it covers. Simpson Strong-Tie rates it for cracks from 1/64 inch to 1/4 inch wide, which makes it useful for the hairline-to-moderate cracks you run into on residential and commercial concrete surfaces. Because it is a low-viscosity formula, it is built to flow into tight openings better than thicker patch materials that only sit on the surface.

The practical advantage is that the ETIPAC2G10 dispenses with a standard caulking tool, so you do not need a dedicated specialty gun just to use the cartridge. That makes it easier for contractors, maintenance crews, and serious DIY users to keep moving on small repair jobs. Simpson Strong-Tie also notes compatibility with the CDT10S dispensing tool, giving you another setup option if that is already part of your kit.

On the repair side, this epoxy does more than fill space. Simpson Strong-Tie states that it chemically bonds with the concrete to restore strength and helps seal out moisture, which matters when you are trying to protect embedded rebar from corrosion or keep moisture from migrating up into finished flooring. That combination of bonding and sealing is the reason injection epoxy is often the better choice than a simple surface patch when the crack needs a real repair approach.

Jobsite conditions are not always ideal, and this product is built with that in mind. It can be used for crack injection in dry, damp, or wet conditions with good results, though it is not for actively leaking cracks. It is also rated as freeze-thaw resistant and uses a non-shrink formula that resists oils, salts, and mild chemicals. In plain terms, that gives you a repair material better suited to real concrete service conditions than a brittle filler that can let go later.

The working properties are set up for controlled repair work rather than a rushed application. Simpson Strong-Tie lists a mixed viscosity of 500 cP and a gel time of 105 minutes when tested at 72 degrees Fahrenheit. That gives you a reasonable working window for setup and injection. For best mixing performance, the resin and hardener should be conditioned to 60 degrees Fahrenheit to 80 degrees Fahrenheit before mixing, and the listed application temperature range is 60 degrees Fahrenheit to 90 degrees Fahrenheit.

From a standards standpoint, the Simpson Strong-Tie ETIPAC2G10 Crack-Pac Injection Epoxy meets the requirements of AASHTO M-235 and ASTM C881, Type I, Grade 1, Class C. That matters if you are comparing repair materials and want something with clearly stated performance classification instead of vague claims. The shelf life is listed at 24 months unopened, and recommended storage is 45 degrees Fahrenheit to 90 degrees Fahrenheit for best results.

This product makes the most sense for concrete repair contractors, facility maintenance teams, restoration crews, masonry pros, and homeowners dealing with non-structural cracks before they turn into moisture problems. If you are trying to repair actively moving structural damage, this is not the product category you should be reaching for. But for targeted concrete crack repair, pressure injection, gravity feed, and even underwater pressure injection where the application fits the manufacturer guidance, it is a solid, purpose-built option.

A Straightforward Fix for Small Concrete Crack Repairs

The Simpson Strong-Tie ETIPAC2G10 Crack-Pac Injection Epoxy is a smart pick when you need a real injection epoxy for non-structural concrete cracks without turning a simple repair into an equipment project.

• Who it's for: Contractors, maintenance crews, restoration pros, and homeowners handling narrow concrete crack repair in slabs, walls, floors, columns, and beams.
• Why it stands out: It flows into tight cracks, works with a standard caulking tool, and gives you moisture sealing plus a chemical bond to the concrete.
• Worth knowing: This single-cartridge version is not the full injection kit, and it is not meant for actively leaking cracks.

• What size cracks can this epoxy repair? It is suitable for concrete cracks ranging from 1/64 inch to 1/4 inch wide.
• Can it be used in damp concrete? Yes. Simpson Strong-Tie states it can be used in dry, damp, or wet conditions, but not in actively leaking cracks.
• Do I need a special dispensing gun? No. The cartridge dispenses with a standard caulking tool, and Simpson Strong-Tie also lists the CDT10S as a compatible tool.
• What standards does it meet? It meets AASHTO M-235 and ASTM C881 Type I, Grade 1, Class C requirements.