Tomoe's insulating bolts demonstrate their power in joining various dissimilar metals!
When dissimilar metals are joined together in the ground, a potential difference occurs between them, and current flows through the bolts, causing the less noble metal to corrode. By using Tomoe's "Insulated Bolts and Nuts," the areas between flanges and between flanges and bolts/nuts are electrically insulated, preventing electrolytic corrosion. Stainless steel is treated with a dry seizure (galling) prevention coating called "TOM Coat" on the threaded parts of the nuts. Additionally, various steel types can be treated upon request. If you are experiencing issues with galling, not limited to insulated bolts, please consult us. 【Features】 - Uses epoxy resin boards with glass cloth and PTFE sleeves or FEP shrink tubes → Provides high insulation resistance and excellent weather resistance and mechanical strength - Bolt and nut materials include stainless steel, ordinary steel, and high-tensile steel → Can be selected according to application - The outer diameter of the insulating sleeve is almost equal to the outer diameter of the screw → No need to process the bolt hole diameter of the flange - Uses sleeves instead of paint as insulating material → No peeling and no pinhole issues - Made to order, allowing for production in desired dimensions For more details, please contact us or download the catalog.
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basic information
【Characteristics of Insulating Materials (Standard Performance Values)】 [Insulating Sleeves] ○PTFE →Heat Resistance Temperature: 260℃ →Volume Resistivity: ＞10¹⁸ Ω・cm →Insulation Resistance: ― →Tensile Strength: 13.7～34.3MPa →Compressive Strength: 11.8MPa ○FEP →Heat Resistance Temperature: 205℃ →Volume Resistivity: ＞10¹⁸ Ω・cm →Insulation Resistance: ― →Tensile Strength: 18.6～21.2MPa →Compressive Strength: 15.2MPa [Insulating Washers] ○Epoxy with Glass Cloth →Heat Resistance Temperature: 120℃ →Volume Resistivity: 10¹³～13¹⁵ →Insulation Resistance: 10¹²～10¹⁴ →Tensile Strength: ― →Compressive Strength: 340～440MPa ● For more details, please contact us or download the catalog.
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Applications/Examples of results
【Usage Classification and Examples】 ○ Universal type that can respond in all directions → Can be used for applications with high functional requirements (e.g.) Water supply and drainage, bridges, air conditioning, gas, refineries, power plants, etc... ● For more details, please contact us or download the catalog.
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Company information
We have gained a high reputation for our products in the manufacturing of special fittings and bolts/nuts used for the installation of gas and water pipes. Additionally, we are actively engaged in various fields, including the production of columns used in liquid chromatography and the development of transparent conductive films utilizing ITO nanoparticles.