---
product_id: 21469586
title: "Simpson Strong-Tie Crack-Pac Flex-H20 Polyurethane Crack Sealer - Anchoring, Fastening, Restoration and Strengthening Systems for Concrete & Masonry, 9 oz"
brand: "simpson strong-tie"
price: "฿6119"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/21469586-simpson-strong-tie-crack-pac-flex-h20-polyurethane-crack-sealer
store_origin: TH
region: Thailand
---

# 20:1 expansion ratio water-resistant flexible seal reacts in under 3 minutes Simpson Strong-Tie Crack-Pac Flex-H20 Polyurethane Crack Sealer - Anchoring, Fastening, Restoration and Strengthening Systems for Concrete & Masonry, 9 oz

**Brand:** simpson strong-tie
**Price:** ฿6119
**Availability:** ✅ In Stock

## Summary

> ⚡ Seal cracks fast, flex strong, and never miss a beat!

## Quick Answers

- **What is this?** Simpson Strong-Tie Crack-Pac Flex-H20 Polyurethane Crack Sealer - Anchoring, Fastening, Restoration and Strengthening Systems for Concrete & Masonry, 9 oz by simpson strong-tie
- **How much does it cost?** ฿6119 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/21469586-simpson-strong-tie-crack-pac-flex-h20-polyurethane-crack-sealer)

## Best For

- simpson strong-tie enthusiasts

## Why This Product

- Trusted simpson strong-tie brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lightning-Fast Cure:** Begins expanding within 1 minute of moisture exposure, completing in as little as 3 minutes.
- • **Rapid Expansion Power:** Seals cracks up to 1/4" wide with a 20:1 expansion ratio for maximum fill efficiency.
- • **Versatile Wet & Dry Use:** Perfect for sealing both leaking and non-leaking cracks in concrete, brick, and masonry surfaces.
- • **Trusted Structural Strength:** From Simpson Strong-Tie, a leader in engineered solutions for safer, stronger buildings.
- • **Effortless Precision Application:** Cartridge design with built-in accelerator ensures easy, mess-free use with standard caulking tools.

## Overview

Simpson Strong-Tie Crack-Pac Flex-H20 is a high-performance polyurethane crack sealer designed for concrete and masonry. It rapidly expands up to 20 times its volume within minutes of moisture exposure, creating a flexible, water-resistant seal for cracks from 1/32" to 1/4" wide. Easy to apply with standard caulking tools, it works effectively on both wet and dry surfaces, making it the go-to solution for fast, reliable crack repair and restoration.

## Description

Simpson Strong-Tie Crack-Pac Flex-H20 Polyurethane Crack Sealer - Anchoring, Fastening, Restoration and Strengthening Systems for Concrete & Masonry, 9 oz

## Features

- CRACK SEALANT: Simpson Strong-Tie Crack-Pac Flex-H20 polyurethane injection effectively seals cracks, voids, or fractures ranging from 1/32" to 1/4" wide in concrete or solid masonry, expanding to provide a flexible seal in both leaking and non-leaking conditions.
- FAST REACTING: Crack-Pac Flex H20 Sealer activates quickly, beginning to expand within 1 minute of moisture exposure. The expansion process completes in as little as 3 minutes, depending on moisture levels and temperature. With a 20:1 expansion ratio, this sealer efficiently fills cracks and voids, using less material to achieve a strong, flexible seal.
- EASY APPLICATION: Conveniently dispensed with a standard caulking tool, the Crack-Pac Flex-H2O sealer features polyurethane resin in the cartridge and an accelerator in the nozzle, ensuring easy application, precise mixing, and controlled reaction time for efficient crack repair.
- ADAPTABLE CONDITIONS: Suitable for wet or dry cracks, with options to reduce or omit the accelerator for slower reaction times. This sealer is ideal for non-structural crack repair in various materials such as concrete, brick, and wastewater facilities.
- SIMPSON STRTONG-TIE RELIABILITY: At Simpson Strong-Tie, our mission is to provide solutions that help people design and build safer, stronger structures. As a pioneer in the building industry, we have an unmatched passion for problem solving through skillful engineering and thoughtful innovation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Polyurethane |
| Brand | Simpson Strong-Tie |
| Style | Compact |
| Item Weight | 1.1 Pounds |
| Item dimensions L x W x H | 2 x 2 x 19 inches |
| Water Resistance Level | Water Resistant |
| Item Form | Liquid |
| UPC | 707392847700 |
| Unit Count | 1.0 Count |
| Global Trade Identification Number | 00707392847700 |
| Number of Items | 1 |
| Color | clear |
| Surface Recommendation | Concrete or Solid Masonry |
| Manufacturer | Simpson Strong-Tie |
| Part Number | CPFH09 |
| Item Weight | 1.1 pounds |
| Product Dimensions | 2 x 2 x 19 inches |
| Item model number | CPFH09 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Polyurethane
- **Brand:** Simpson Strong-Tie
- **Style:** Compact
- **Item Weight:** 1.1 Pounds
- **Item dimensions L x W x H:** 2 x 2 x 19 inches

## Images

![Simpson Strong-Tie Crack-Pac Flex-H20 Polyurethane Crack Sealer - Anchoring, Fastening, Restoration and Strengthening Systems for Concrete & Masonry, 9 oz - Image 1](https://m.media-amazon.com/images/I/61gOUaSQnRL.jpg)
![Simpson Strong-Tie Crack-Pac Flex-H20 Polyurethane Crack Sealer - Anchoring, Fastening, Restoration and Strengthening Systems for Concrete & Masonry, 9 oz - Image 2](https://m.media-amazon.com/images/I/61ZgD4kAHwL.jpg)
![Simpson Strong-Tie Crack-Pac Flex-H20 Polyurethane Crack Sealer - Anchoring, Fastening, Restoration and Strengthening Systems for Concrete & Masonry, 9 oz - Image 3](https://m.media-amazon.com/images/I/81EYFCk5EwL.jpg)
![Simpson Strong-Tie Crack-Pac Flex-H20 Polyurethane Crack Sealer - Anchoring, Fastening, Restoration and Strengthening Systems for Concrete & Masonry, 9 oz - Image 4](https://m.media-amazon.com/images/I/811R+UUUpHL.jpg)
![Simpson Strong-Tie Crack-Pac Flex-H20 Polyurethane Crack Sealer - Anchoring, Fastening, Restoration and Strengthening Systems for Concrete & Masonry, 9 oz - Image 5](https://m.media-amazon.com/images/I/71GfaCNQMfL.jpg)

## Questions & Answers

**Q: Will this bond to and around a pvc pipe that penetrates our foundation wall?**
A: It will bond to practically everything. Make sure that your pipe does not move as this may stress and eventually wear out the foam around pipe. That said the foam is very flexible.

**Q: do I need anything else to use  the pac? does it include ports?**
A: This is an additional tube to use with the kit that has the ports. This does not include ports or the epoxy sealer for the ports. I purchased this extra tube because the crack in my basement wall was so big, I needed the extra filler.

**Q: Does the product expand & if so, how much?**
A: Yes it does expand and I am guessing at least 3-4 times it’s mass since it is meant to travel through a crack from the inside of the basement to the outside where the crack originated.

**Q: will this work on hairline cracks in a concrete wall...**
A: In order for this to be used on a crack, holes need to be drilled and ports installed to inject the product. There is a procedure to follow on their website.

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-11*