Instant hardening water stop material - Stop it now! ~ Concrete leak/water leak rapid-setting water stop material ~

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Immediate stop.

last updated：Nov 19, 2025

EPJ

Unexpected "leakage" can be stopped immediately! One box for the site, one box for the home, one box for each household, stop it immediately. A cement-based quick-setting water-stopping material. Now available in an easy-to-use recycled bottle!

TometaroⓇ Series Instant Hardening Water Stop Material "Soku-Tomeru Instant Seal" ■ Easy Application Simply grab the powder and press it with your palm against the leak for about 10 to 30 seconds. It will react with water and stop the leak. ■ Quick Water Stopping A great product that allows you to instantly "stop" the leak on the spot when you're in trouble! ■ Comes in Recyclable Bottles Environmentally friendly. Unlike large bags, there is less product waste. *For details, please request a catalog through "Contact Us" or view the PDF data from "Download"

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basic information

Have you ever encountered a situation where you need to stop leaks immediately from concrete structures that are deteriorating due to sudden guerrilla downpours caused by recent linear precipitation zones? In such situations, "Sokutome-ru" is useful. You can grab it in powder form, press it with your palm, and apply it to the leak for about 10 to 30 seconds. It reacts with water and stops the leak. It's an essential maintenance item for daily use! It can be used in powder form without pre-wetting (except for excessive leaks). Available for sale in a 1 kg box (containing two 500 g recyclable bottles), making it easy to use. TometaroⓇ Channel [EPJ INC.] https://www.youtube.com/watch?v=_qi6Z552aMk ~Usage instructions are available on YouTube, so please be sure to check the video before filling work. If you have any questions regarding handling, please feel free to contact us at the information below.~ Contact: EPJ INC. TEL: +81 3-5643-8137 FAX: +81 3-5643-8138 Email: info@epj-inc.co.jp

Price range

Delivery Time

Applications/Examples of results

Local government projects, large private facilities, renewable energy construction, etc. We are promptly stopping water leaks and seepage at various construction sites. Of course, we also appreciate your support for "water troubles" in individual households! <Major delivery achievements for the fiscal year 2023 (excerpt)> - Yokohama City Hall) Knazawa Water Reclamation Center (Kanagawa Prefecture) - Private) (tentative name) L Yokohama new construction project (Kanagawa Prefecture) - Private) Japan Chiba Factory (Chiba Prefecture) - Private) New construction project (Kumamoto Prefecture) - Private) F demonstration facility construction project (Fukushima Prefecture) - Ward Office) Removal work of pipes near 6-chome, Town (Tokyo) - Private) M Mitsubishi factory new building construction project (Kanagawa Prefecture) - Private) A residence water leak trouble (Hyogo Prefecture) etc.

Detailed information

The 500ml bottle is recyclable, making it extremely easy to use!
A delightful compact package!
1: Take "Soku Tome-ru (powder)" from the bottle and apply it to the leak area.
2: Aim at the leak location and press "Sokutome-ru" firmly.
3: Reacts with water and begins to harden. Press the palm of your hand against it for about 10 to 30 seconds and wait.
4: After confirming that the water has stopped, release your hands. Remove any excess material and complete the work.
YouTube still water demonstration video