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  6. Waterproofing measures for penetrations using non-hardening water stop material Tome Taro (R) [NETIS]

Waterproofing measures for penetrations using non-hardening water stop material Tome Taro (R) [NETIS]

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TOMETARO

last updated:Sep 06, 2026

EPJ
EPJ
  • Special site
  • Official site

Trusted brand Tome Taro® NETIS registered "Flood Prevention and Waterproofing Promotion Construction" into a new realm!

<NETIS Registration Number: KT250002-A> Water-stopping material Tome Taro registered under the jurisdiction of "KT"! "Water ingress countermeasure method for penetrations using non-curing water-stopping material that does not dissolve in water and maintains viscosity" 【Non-curing Polyolefin-based One-component Water-stopping Putty Tome Taro (R)】 <Features> ■ Heat resistance up to 90℃, stable water stopping without yielding to high-pressure cables ■ Putty alone/water-tight performance clears 0.05MPa (with optional use 0.15MPa) ■ Can also handle water leakage (flowing water) ■ Consideration for cable re-pulling allows for removal/re-filling ■ Unlike curing water-stopping materials, there is no curing shrinkage, allowing for continuous water stopping ■ A sense of security with abundant adoption results in both public and private sectors ■ Safe rodent prevention, also blocks rodent intrusion ■ A wide range of options to accommodate various situations ■ "Japan Quality" assurance and reliable quality ■ Ecology & Safety gentle to the Earth and humanity 【TOMETARO PAGE】 https://epj-inc.co.jp/page-tometaro.php *For details, please request a catalog via "Contact Us" or view the PDF data from "Download".

    Piping and electrical wiring materialsDisaster prevention suppliesPiping materials (plastic pipes)
4PLEY5KqtaTi1Ni1755943714_1755943728_Image

Waterproofing measures for penetrations using non-hardening water stop material Tome Taro (R) [NETIS]

4PLEY5KqtaTi1Ni1755943714_1755943728_Image Enhancer.jpg
4PLEY5KqtaTi1Ni1755943714_1755943728_Image Enhancer.jpg No.1.jpg No.7.png No.2.png No.4.png No.6.png 9jwPVQx97psUhl51760427703_1760427715.jpg No.3.jpg MojQJfB8Ky945ir1760426301_1760426320.png No.8.png
  • <NETIS Registration Number: KT-250002-A> Tome Taro "Waterproofing Method for Penetrations Using Non-Hardening Water Stop Material with Persistent Viscosity that Does Not Dissolve in Water"
  • Special site - Product/service details - https://pr.www.ipros.com/epj/product/

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Related Videos

basic information

<Main Uses> ◆ Prevention and measures against water leakage along laid cables ◆ Treatment of water leakage in handholes ◆ Prevention and measures against water leakage from cable conduit materials and gaps in wall joints ◆ Prevention and measures against water leakage around sleeves ◆ Prevention and measures against water leakage from concrete cracks ◆ Sealing and condensation prevention inside cubicles and similar enclosures ◆ Prevention of rodent intrusion and environmental pest control Tome Taro (R) Channel [EPJ INC.] ● Tome Taro filling construction video Ver. 3 https://www.youtube.com/watch?v=S-U0qXw_u9o ● Proposal for waterproof sleeves for underground walls "Pipe-in-Sleeve" https://www.youtube.com/watch?v=9ROp4sU2Rpc ~ Usage instructions are available on YouTube; please be sure to check before filling work. If you have any questions regarding handling, please do not hesitate to contact us at the information below ~ Contact: EPJ Corporation [E-P-J] TEL: 03-5643-8137 FAX: 03-5643-8138 Email: info@epj-inc.co.jp

Price range

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Delivery Time

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※Immediate delivery

Applications/Examples of results

*R2.6 Ministry of Land, Infrastructure, Transport and Tourism Publication "Guidelines for Flood Prevention Measures for Electrical Equipment in Buildings" *R3.4 (Public Interest Incorporated Foundation) Japan Sewerage New Technology Organization "Promotion of Waterproofing (Final Version)" The adoption of these measures in construction work is rapidly increasing. Electrical equipment (handhole pipe openings, underground penetrations, around piping) Mechanical equipment (underground penetrations, around piping) Civil engineering and construction 【Ministry of Land, Infrastructure, Transport and Tourism Adoption Records】 <2023 Fiscal Year> - A Bypass Pavement No. 3 Construction - T International Airport East Side Apron Lighting Improvement Work <2024 Fiscal Year> - Manufacturing and installation of a complete set of power distribution equipment for the new F Airport terminal - Development project for the K Port fueling facility of the Japan Coast Guard - S Electric Cable Joint Trench Construction for Fiscal Years 2022 and 2023 - Renovation work for T Office of the S River Office - Construction work for the main body of the new M Dam for Fiscal Year 2020 *Other public offices and local government flood prevention and waterproofing construction projects, as well as numerous adoption records for renewable energy construction and power-related companies. For details, please check the related catalog and various "Tome Taro Adoption Record Sheets."

Detailed information

  • No1.jpg

    Handhole / Leakage

  • No2.png

    Underground pit/leakage

  • No3.png

    Power specification handhole/leakage

  • No4.png

    Special Department / Leak Prevention

  • No5.png

    Underground pit / leak prevention

  • No6.png

    Handhole / Leak Prevention

Line up(6)

Model number overview
TM-B5 Tome Taro 5kg Cup
TM-B1 Tome Taro 1kg Cup
SU-1 (Optional) Suutaro Backup Material 20×70×1,000L
HT-1K (Optional) Hatsu-ray 1kg bag
PK375 (Optional) Pikaristar 375ml (Tome Taro Removal Agent)
PK375H (Optional) Pikaristar Box 375ml x 6 bottles (Tome Taro Removal Material)

catalog(7)

Download All Catalogs
Tome Taro® Non-drying Polyolefin-based One-component Water Stop Putty - Non-curing Water Stop Material -

Tome Taro® Non-drying Polyolefin-based One-component Water Stop Putty - Non-curing Water Stop Material -

PRODUCT
  • E-book viewing
  • Catalog download

Contact this catalog

Tome Taro® Non-drying Polyolefin-based One-component Water Stop Putty (Non-curing Water Stop Material) Leak Prevention/Leak Repair - Flood Prevention and Waterproofing Project -

Tome Taro® Non-drying Polyolefin-based One-component Water Stop Putty (Non-curing Water Stop Material) Leak Prevention/Leak Repair - Flood Prevention and Waterproofing Project -

PRODUCT
  • E-book viewing
  • Catalog download

Contact this catalog

Tometaro® Water Stop and Filling Material [Rodent Control / Flood Prevention & Waterproofing] Non-Hardening Type Cable/Through-Penetration Water Stop Material and Water Stop Putty

Tometaro® Water Stop and Filling Material [Rodent Control / Flood Prevention & Waterproofing] Non-Hardening Type Cable/Through-Penetration Water Stop Material and Water Stop Putty

PRODUCT
  • E-book viewing
  • Catalog download

Contact this catalog

Tome TaroⓇ ser. Premixed Mortar Hatsu Re-ru (Chipping Mortar)

Tome TaroⓇ ser. Premixed Mortar Hatsu Re-ru (Chipping Mortar)

PRODUCT
  • E-book viewing
  • Catalog download

Contact this catalog

All-purpose release agent "Pikaristar" stripping agent and remover [Electricity and Communication Equipment Edition]

All-purpose release agent "Pikaristar" stripping agent and remover [Electricity and Communication Equipment Edition]

PRODUCT
  • E-book viewing
  • Catalog download

Contact this catalog

[Underground beam sleeve/flood prevention/waterproofing] Waterproof sleeve for underground exterior walls "Pipe in Sleeve" A3 size spread

[Underground beam sleeve/flood prevention/waterproofing] Waterproof sleeve for underground exterior walls "Pipe in Sleeve" A3 size spread

PRODUCT
  • E-book viewing
  • Catalog download

Contact this catalog

[Underground beam sleeve/flood prevention/waterproofing] Waterproof sleeve for underground exterior walls "Pipe in Sleeve" A4 size

[Underground beam sleeve/flood prevention/waterproofing] Waterproof sleeve for underground exterior walls "Pipe in Sleeve" A4 size

PRODUCT
  • E-book viewing
  • Catalog download

Contact this catalog

CAD data(12)

Model number overview File
Drawing: Tome Taro Filling Cross Section (2 Layers) Bell Mouth Specification Non-drying polyolefin-based single-component water-stopping putty "Tome TaroⓇ" Furukawa Electric Co., Ltd. underground cable protection pipe "Eflex" This is a cross-sectional view of the two-layer filling at the handhole wall surface/cable penetration section (bell mouth).
  • 2D pdf ( 460KB)
Drawing: Tome Taro Filling Cross Section (2 Layers) Bell Mouth Specification Non-drying polyolefin-based single-component water-stopping putty "Tome TaroⓇ" Furukawa Electric Co., Ltd. underground cable protection pipe "Eflex" This is a cross-sectional view of the two-layer filling at the handhole wall surface/cable penetration section (bell mouth).
  • 2D jww ( 0B)
Drawing: Tome Taro Filling Cross Section (2 Layers) Bell Mouth Specification Non-drying polyolefin-based single-component water-stopping putty "Tome TaroⓇ" Furukawa Electric Co., Ltd. underground cable protection pipe "Eflex" This is a cross-sectional view of the two-layer filling at the handhole wall surface/cable penetration section (bell mouth).
  • 2D dxf ( 0B)
Drawing: Tome Taro Filling Cross Section (2 Layers) Aqua Connector® Specification Non-drying polyolefin-based single-component waterproofing putty "Tome Taro®" Furukawa Electric Co., Ltd. underground cable protection pipe "Eflex" This is a cross-sectional view of the two-layer filling at the handhole wall/cable penetration (Aqua Connector).
  • 2D pdf ( 454KB)
Drawing: Tome Taro Filling Cross Section (2 Layers) Aqua Connector® Specification Non-drying polyolefin-based single-component waterproofing putty "Tome Taro®" Furukawa Electric Co., Ltd. underground cable protection pipe "Eflex" This is a cross-sectional view of the two-layer filling at the handhole wall/cable penetration (Aqua Connector).
  • 2D jww ( 58KB)
Drawing: Tome Taro Filling Cross Section (2 Layers) Aqua Connector® Specification Non-drying polyolefin-based single-component waterproofing putty "Tome Taro®" Furukawa Electric Co., Ltd. underground cable protection pipe "Eflex" This is a cross-sectional view of the two-layer filling at the handhole wall/cable penetration (Aqua Connector).
  • 2D dxf ( 122KB)
Drawing: Tome Taro Filling Cross Section (3 Layers) Bell Mouth Specification Non-drying polyolefin-based one-component waterproofing putty "Tome Taro" + "Hatsureru" Furukawa Electric Co., Ltd. Underground cable protection pipe "Eflex" This is a cross-sectional view of the three-layer filling at the handhole wall/cable penetration section (bell mouth).
  • 2D pdf ( 493KB)
Drawing: Tome Taro Filling Cross Section (3 Layers) Bell Mouth Specification Non-drying polyolefin-based one-component waterproofing putty "Tome Taro" + "Hatsureru" Furukawa Electric Co., Ltd. Underground cable protection pipe "Eflex" This is a cross-sectional view of the three-layer filling at the handhole wall/cable penetration section (bell mouth).
  • 2D jww ( 72KB)
Drawing: Tome Taro Filling Cross Section (3 Layers) Bell Mouth Specification Non-drying polyolefin-based one-component waterproofing putty "Tome Taro" + "Hatsureru" Furukawa Electric Co., Ltd. Underground cable protection pipe "Eflex" This is a cross-sectional view of the three-layer filling at the handhole wall/cable penetration section (bell mouth).
  • 2D dxf ( 163KB)
Drawing: Tome Taro Filling Cross Section (3 Layers) Aqua Connector® Specification Non-drying polyolefin-based single-component water stop putty "Tome Taro" + "Hatsureru" Furukawa Electric Co., Ltd. Underground cable protection pipe "Eflex" This is a cross-sectional view of the three-layer filling at the handhole wall and cable penetration section (Aqua Connector).
  • 2D pdf ( 470KB)
Drawing: Tome Taro Filling Cross Section (3 Layers) Aqua Connector® Specification Non-drying polyolefin-based single-component water stop putty "Tome Taro" + "Hatsureru" Furukawa Electric Co., Ltd. Underground cable protection pipe "Eflex" This is a cross-sectional view of the three-layer filling at the handhole wall and cable penetration section (Aqua Connector).
  • 2D jww ( 66KB)
Drawing: Tome Taro Filling Cross Section (3 Layers) Aqua Connector® Specification Non-drying polyolefin-based single-component water stop putty "Tome Taro" + "Hatsureru" Furukawa Electric Co., Ltd. Underground cable protection pipe "Eflex" This is a cross-sectional view of the three-layer filling at the handhole wall and cable penetration section (Aqua Connector).
  • 2D dxf ( 143KB)

News about this product(4)

Notice of participation in 'JECA FAIR 2026 - The 74th Electrical Installation Industry Exhibition' from May 27 (Wednesday) to May 29 (Friday), 2026.

  • Seminar・Event

As always, our well-known "Non-drying Polyolefin-based One-component Water Stop Putty TometaroⓇ" and the "Underground Wall Waterproof Sleeve Pipe-in-Sleeve (abbreviated as PIS)," which has been well-received since its launch last year, will be exhibited at the "JECA FAIR 2026 - 74th Electrical Equipment Industry Exhibition" held at Tokyo Big Sight. This exhibition is the largest comprehensive electrical equipment exhibition in Japan, showcasing new products related to electrical equipment, tools, measuring instruments, software, systems, and more, as well as introducing construction techniques, improving construction efficiency, academic presentations, and initiatives for reforming work styles in the electrical equipment industry. The exhibition will be at the booth of Furukawa Electric Co., Ltd. We sincerely look forward to your visit.

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Waterproof sleeve for underground and outer wall Pipe-in-Sleeve TM (abbreviated as PIS)

We have updated the proposal from Tome Taro® regarding flood prevention/waterproofing promotion project [Comprehensive Catalog].

  • Catalog news

Proposals for flood prevention and waterproofing construction in general, starting with the familiar water-stopping putty Tome Taro! From cable penetration points to waterproof sleeves for underground exterior walls, and all the way to completely waterproof and odor-proof manhole covers, we solve the "water issues" of underground facilities all at once! ■ [NETIS] Non-drying polyolefin-based one-component water-stopping putty Tome Taro® ■ Waterproof sleeve for underground exterior walls - Pipe-in-sleeve ■ Water pressure-resistant waterproof manhole cover (manhole lid) and machine hatch *For detailed information on each product, please refer to the individual catalogs.

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Lightweight! Polyethylene pedestrian passage (pedestrian entrance) is set to be released.

  • Product news

"Lightweight" accelerates "efficiency" on site! Materials that combine high pressure resistance and direct workability with "lightweight." In particular, rigid polyvinyl chloride pipes (PVC) weigh about 53 kg/m, while polyethylene sleeves weigh only about 17 kg/m, showing a significant weight difference! We guarantee a definite improvement in work efficiency at construction sites. Furthermore, it also contributes to reducing the burden on workers and lowering the risk of accidents, enhancing safety!

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We have started publishing CAD.

  • Other・notification

We are sequentially publishing various cross-sectional diagrams of Tome TaroⓇ filling, such as Pipe in Sleeve and EP-Sleeve. Please make use of them.

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EPJ

EPJ

Building materials, supplies and fixtures manufacturers

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A manufacturer specialized in planning, design, and engineering. We focus on product development to solve various issues at construction sites, providing innovative, cutting-edge, and ecological products. Please feel free to contact us.

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