Thermo Proof is single-use temperature indicator which  irreversibly change its color by reaching or exceeding color changing temperature. Especially designed for high temperature such as industrial oven temperature and heat treatment. 

Temperature monitoring can be done without wiring and electric powers supply just by applying this label on where it is necessary.

• Supporting High temperature from 250°c to 450°c.
• For Industrial oven temperature and heat treatment temperature check 
• Clear result & Easy reading
• Self adhesive and easy to apply on various location

Product Variation

- Size: 5mmx20mm (color changing part :5mmφ)
- Payment Terms: 100% advanced payment before shipment only
- Our products are strictly under the control of ISO9001:2008 QC system.

- RoHS compliant (G-1 only)

Case design

About us

"From the Ocean to Outer Space"

  NiGK Corporation was fully financed and established by NOF CORPORATION in December 1980. Inheriting the know-how accumulated by TEIKOKU PYROTECHNICS MANUFACTURE CO., LTD., which had lasted from 1938 to 1970, and that of NOF CORPORATION, Kawagoe Plant which succeeded it, we have promoted research and development in various fields in parallel with manufacturing of pyrotechnics and temperature indicating materials and other products. 

  With on ever-expanding scope of our business, our products have been patronized in different fields widely ranging from the deep seabed to outer space, as indicated by our catch phrase, ""From the Ocean to Outer Space,"" contributing to safety and reliability of various systems.

1. Activities: Production and Sales of Diversified Products:

1-1. Chemical Products
           -  Temperature indicators 
           -  Radioactive Indicators
           -  Sterilization bags and chemical indicators
           -  Reinforcement materials for construction 
           -  Exothermic welding powder and molds
           -  Combustible materials
           -  Gas generators

1-2. Machinery and Electrical Equipment
           -  Ocean exploring equipments
           -  Power transmission failure indicators

1-3. Pyrotechnical Devices
           -  Rocket Pyrotechnics

"Recognizing temperature at first sight with color change"
We have been developing and manufacturing various kinds of indicator labels according to customer needs since 1965.
Our products are used in various fields such as Electricity industries, Railroads, Food companies and so on.

Keyword: heat treatment