M.WATANABE & CO.,LTD. Product Lineup

The chrome mask rubber sheets produced by our group company, Wacom Manufacturing, are made in a clean environment and come in a wide variety of types. 【Features】 ■Manufactured in a clean environment 　・Being manufactured to minimize containment of foreign matter. ■Wide variety of types 　・Material hardness ranges from 0 to 90 degrees (JIS A), and thickness is available from 0.3mm. ■Adhearing resin to rubber 　・It is possible to bond not only rubber itself but also resin to rubber. 　(For example: double-coated adhesive tape, PET film, Bakelite, Gala-epoxy, etc.) *For more details, please contact us or download our catalog for more information.

Molded products, mainly silicone rubber, are manufactured by one of our group companies, Wacom Manufacturing Co., Ltd.. Silicone rubber moldings are manufactured in a clean environment to prevent contact with foreign matter. Furthermore, the dimensional accuracy of the molded products is greatly improved and suitable for semiconductor manufacturing systems, and medical device parts. 【Features】 ■Suitable for semiconductor manufacturing systems and medical equipment. ・The product is manufactured in a clean environment free of foreign substances from material kneading to packaging. ■Capable of obtaining the original dimensional values of products. ・The general measurement of the product is by contact "Measuring rubber by crushing and deforming" but we can obtain the original dimensional values of products by non-contact measurement using an optical measuring instrument. ■Providing high quality products ・We continue to provide high-quality products to satisfy our customers by performing qualitative and quantitative analysis using analysis equipment (infrared spectroscopy), 3D laser scanning confocal microscope, rubber universal automatic hardness tester, and physical property measuring instruments. ■Waterproof parts that pass IPX7* (protection class against inundation) 　・Integral molding of different materials is also possible (resin material + silicone rubber, metal + silicone rubber, etc.) *For more details, please contact us or download the catalog.

The silicone gel sheet is an ultra-low hardness silicone rubber sheet manufactured by one of our group companies, Wacom Manufacturing Co., Ltd. Demand for ultra-low hardness is steadily increasing for shock-absorbing, masking, and other applications. We will standardize on ultra-low hardness sheet and deliver it to users in various industries within a short period of time. 【Features】 　・High shock absorption with exceptional softness 　・Vibration isolating performance, which is not possible with rubber 　・High thermal conductivity 　・Excellent waterproofing and dust proofing *For more details, please contact us or download our catalog for further information.

The silicone rubber sheets manufactured by one of our group companies, Wacom Manufacturing Co., Ltd., are produced in a well-sterilized facility with almost no contamination such as foreign matter. 【Specifications】 　・Thickness: 0.5mm, 1mm, 1.5mm, 2mm, 3mm, 4mm, 5mm 　・Size: 300mm x 300mm, 500mm x 500mm In addition to general-purpose products listed above, we can also provide silicone rubber sheets with special specifications such as conductivity, flame retardance, heat resistance, heat dissipation, and high tear resistance. Please contact us for details, thicknesses, and sizes other than the above. *For details and inquiries about thicknesses and sizes not listed above, please contact us.

The ultra-transparent silicone rubber has a transmittance of 95%, which is as transparent as glass or acrylic resin. It is available in thicknesses from 100 μ as the best buffer protection film for preventing scratches on LCD screens, operating touch panels, and other screens. 【Features】 　・Transparency is as good as glass with 95% transmittance. 　・Flexible and unbreakable. 【Applications】 　・Protective film (scratch protection for LCD screens and buffer protection for touch panels and 　 other screen operations) 　・Various parts for LED's 　・Substitute material for glass and acrylic 　・Materials for interiors, toys, and accessories 　・Materials for special lenses, etc. *For more details, please contact us.

This product consists of glass fiber placed between silicone sheets. *For more details, please contact us.*

Silicone is functional material used in a wide range of industries because it has excellent heat resistance, weather resistance, and electrical properties, and can be used in a wide variety of product forms such as rubber and resin. We have some of Momentive's silicone products in stock which we can supply in a very short period of time. 【Features】 ・Excellent scientific and thermal stability, weather resistance, and electrical insulation properties. ・Mold releasability ・Non-adhesive addition ・Defoaming property, etc 【Applications】 ・Room temperature curing type silicone rubber (RTV) is used as adhesives, potting agents, sealants, etc. *For more information, please contact us or download our catalog.

Our company's ultra-low temperature silicone rubber demonstrates the expected functions of silicone rubber, particularly flexibility, even in harsh environments at ultra-low temperatures (around -114°C). 【Features】 ■ Exhibits flexibility at ultra-low temperatures of -114°C. In bending and tensile tests, our silicone rubber does not break or fracture in environments where general-purpose silicone rubber loses its properties due to extreme cold. ■ Medical-grade silicone rubber that has passed rigorous testing. This medical-grade silicone rubber has passed stringent compatibility tests, including medical standards (ISO 10993) and USP (United States Pharmacopeia Class VI). *For more details, please contact us or download our catalog for more information. #ColdResistanceOfSiliconeRubber #SiliconeRubber(Si) #SiliconeRubberSheet #PropertiesOfSiliconeRubber

Our company's ultra-low temperature silicone rubber demonstrates the expected functions of silicone rubber, particularly flexibility, even in harsh environments at ultra-low temperatures (around -114°C). 【Features】 ■ It maintains flexibility at ultra-low temperatures of -114°C. In bending and tensile tests, our silicone rubber does not break or fracture in ultra-low temperature environments where general-purpose silicone rubber would fail. Therefore, it can be used in applications such as seals for superconducting experiments that operate at ultra-low temperatures. *For more details, please contact us or download our catalog for more information. #ColdResistanceOfSiliconeRubber #SiliconeRubber(Si) #SiliconeRubberSheet #PropertiesOfSiliconeRubber

Fluoroelastomer (FKM) has outstanding heat resistance, oil resistance, and chemical resistance. Utilizing these characteristics, it is used in semiconductor manufacturing equipment, automobiles, energy-related applications, and chemical plant factories. Additionally, through our unique coating and surface modification treatments, various properties can be imparted. 【Features】 ■ Heat resistance, oil resistance, chemical resistance Fluoroelastomer (FKM) excels in high-temperature stability and has excellent oil and chemical resistance. ■ Low gas permeability Processed into gaskets, O-rings, etc., it is widely used for airtight gaskets in semiconductor manufacturing equipment. ■ Performs well in harsh environments Fluoroelastomer (FKM) is utilized in automotive engine parts where oil resistance is required at high temperatures, as well as in the field of medical and scientific applications, leveraging its chemical resistance. ■ Manufactured in a clean environment Manufactured in a clean environment that considers foreign matter prevention, it is widely used in semiconductor manufacturing processes and the medical and scientific fields. *For more details, please contact us or download the catalog for further information. #Heat-resistant rubber sheet #Oil-resistant rubber sheet #Looking for heat-resistant rubber #Silicone rubber (Si) #Silicone rubber sheet

M.Watanabe's silicone rubber sheets can be integrally molded onto various substrates depending on the application. 【Features】 ■ Silicone rubber can be integrally molded onto substrates such as glass epoxy materials. It is mainly used as a plating mask for lead frames and connector manufacturing. ■ Laser processing is also available. ■ Substrates other than glass epoxy boards can also be accommodated. - Bakelite boards - PET films - Double-sided tape - Resins - Metals and others can also be accommodated. *For more details, please contact us or download and view the catalog.

We can manufacture silicone rubber sheets that can withstand ultra-high temperatures (up to 300℃). 【Features】 ■ Unlike conventional general-purpose silicone rubber sheets, these can be used at 300℃. * The heat resistance temperature may vary depending on usage time and other conditions. ■ Other physical properties, aside from heat resistance, are basically the same as those of general-purpose silicone rubber sheets. Therefore, the surface of the sheet has adhesive properties, allowing it to stick firmly while being easy to peel off. Additionally, if you want to reduce the adhesive properties, it is possible to apply coatings or surface modification treatments to decrease the friction coefficient. ■ The sheet thickness can be produced from 0.2t and above. For thinner options, please consult us separately. * For more details, please contact us or download the catalog to view. #HeatResistantRubberSheet #LookingForHeatResistantRubber #SiliconeRubber(Si) #SiliconeRubberSheet #PropertiesOfSiliconeRubber

Our company's ultra-low temperature silicone rubber demonstrates the expected functions of silicone rubber, particularly flexibility, even in harsh environments at ultra-low temperatures (-114°C). 【Features】 ■ This silicone rubber (gaskets, tubes, etc.) can be used in ultra-low temperatures where hydrogen, which is in increasing demand across various sectors such as industry, petroleum refining, power generation, and transportation, is utilized in pursuit of carbon neutrality. ■ It exhibits flexibility at ultra-low temperatures of -114°C. In both bending and tensile tests, our silicone rubber does not break or fracture in ultra-low temperature environments where general-purpose silicone rubber would fail. *For more details, please contact us or download our catalog for further information. #ColdResistanceOfSiliconeRubber #SiliconeRubber(Si) #SiliconeRubberSheet #PropertiesOfSiliconeRubber

Our silicone rubber demonstrates the expected functions of silicone rubber, particularly flexibility, even in extremely low temperatures (SF4 grade, former F4 grade). 【Features】 ■ It can be used in extremely low temperatures (SF4 grade, former F4 grade), where general silicone rubber cannot be used. Therefore, it can also be used as packing for the frozen storage of fish and meat, especially tuna and bonito. ■ It maintains flexibility even at -114°C, making it usable in SF4 grade (former F4 grade). In environments of extreme low temperatures, where general silicone rubber would lose its properties, our silicone rubber does not break or fracture during bending and tensile tests. *For more details, please contact us or download our catalog for more information. #ColdResistanceOfSiliconeRubber #SiliconeRubber(Si) #SiliconeRubberSheet #PropertiesOfSiliconeRubber

Our Company is possible to combine multiple silicone rubber sheets. For example, if you require softness and surface tackiness in the sheet but do not want to compromise on strength, we can accommodate this by combining low-hardness sheets with high-strength sheets. In conventional sheets, low hardness and high strength cannot coexist, and one must be sacrificed. However, at Watanabe Trading Company, we can provide both characteristics. *For more details, please contact us or download and view our catalog.*

We can manufacture silicone rubber products that prevent particle adhesion and are also translucent and colorable. 【Features】 - This silicone rubber overturns the conventional wisdom that particle-resistant silicone rubber must be conductive and black; it is translucent and can be colored. - It can be produced in both sheet and molded forms. - The translucent suction pads make it easier to check the adhered components. - Sheet thickness can be produced from 0.2t and above. For even thinner options, please consult us separately. *For more details, please contact us or download the catalog to view. #TranslucentSiliconeRubber #StaticPreventiveSiliconeRubber #SiliconeRubberSheet

In the manufacturing industry, especially in quality control, accurate masking of products is crucial. In processes such as plating, the precision of masking significantly affects product quality. Contamination by foreign substances or inadequate masking can lead to the occurrence of defective products, potentially resulting in increased costs. Our masking rubber sheets are produced in a clean environment, taking foreign substance countermeasures into consideration. This supports the manufacturing of high-quality products. 【Usage Scenarios】 - Masking in the plating process - Masking in the painting process - Processes where prevention of foreign substance contamination is desired 【Benefits of Implementation】 - Reduction of defective products - Improvement of quality - Cost reduction

In the semiconductor industry, high insulation properties are required to ensure product quality and reliability. Particularly as miniaturization progresses, contamination by foreign substances can lead to insulation failures, potentially resulting in decreased product performance or malfunctions. Our silicone rubber sheets are manufactured in a clean factory, minimizing the risk of foreign substance contamination. This ensures the insulation of semiconductor devices and contributes to improved product reliability. 【Usage Scenarios】 - Insulation applications in semiconductor manufacturing processes - Protection of electronic components - Use in cleanroom environments 【Benefits of Implementation】 - Reduction of defect rates due to foreign substance contamination - Improvement in product reliability - Assurance of stable quality

In the aerospace industry, protection of components and sealing performance under high-temperature environments are required. In particular, areas exposed to extreme temperature changes, such as around engines and the exterior of the aircraft, necessitate materials with excellent heat resistance. Improper material selection can lead to deterioration of components or malfunction, potentially compromising safety. Our silicone rubber sheets excel in heat resistance and meet the stringent demands of aerospace applications. 【Application Scenarios】 - Seals around engines - Protective materials for the exterior of the aircraft - Component cushioning materials in high-temperature environments 【Benefits of Implementation】 - Stable performance maintenance under high-temperature environments - Extended lifespan of components - Improved safety

In the medical device industry, the safety and reliability of products are of utmost importance. Seals are essential components that maintain the airtightness of devices and prevent foreign matter contamination. Particularly in equipment used in medical settings, the leaching of substances from seals or contamination by foreign matter can have serious implications for patient health. Our silicone rubber sheets are manufactured in a well-maintained factory, minimizing the risk of foreign matter contamination. Silicone rubber sheets produced under strict quality control contribute to ensuring the safety of medical devices and protecting patient health. 【Application Scenarios】 - Seals for medical devices - Sealing materials for analytical equipment - Use in clean rooms 【Benefits of Implementation】 - Reduced risk of foreign matter contamination - Improved safety due to high airtightness - Stable performance across a wide temperature range

In the automotive industry, seal materials with high durability, heat resistance, and weather resistance are required. Seals used in harsh environments, such as around engines and vehicle bodies, prevent leaks and deterioration, contributing to the maintenance of vehicle performance. Our silicone rubber sheets are manufactured through a process that minimizes the risk of foreign material contamination, and by providing products with various characteristics tailored to customer needs, we contribute to the improvement of automotive quality. 【Application Scenes】 - Engine gaskets - Door seals - Window glass seals - Other automotive sealing applications 【Benefits of Implementation】 - High sealing performance - Improved durability - Reduced risk of foreign material contamination - Usable over a wide temperature range

In the food industry, measures to prevent foreign matter contamination in the materials used for molding are crucial to ensure food safety. Particularly in molding molds that come into direct contact with food, the presence of foreign substances can lead to serious issues. Our silicone rubber sheets are manufactured in well-cleaned factories, reducing the risk of contamination. They contribute to maintaining food quality. 【Usage Scenarios】 - Food molding molds - Food transport belts - Food packaging seals 【Benefits of Implementation】 - Reduced risk of foreign matter contamination - Maintenance of food quality - Increased efficiency in the molding process

In the marine industry, materials that can withstand harsh environments are required. In particular, corrosion from saltwater and ultraviolet rays significantly reduces the durability of products. Our silicone rubber sheets with glass epoxy substrates are excellent in corrosion resistance, making them ideal for use in marine environments. Silicone rubber is highly water-resistant and weather-resistant, maintaining performance over long periods. The combination with glass epoxy substrates achieves high strength and durability. 【Application Scenarios】 - Marine structures - Ship components - Underwater equipment 【Benefits of Implementation】 - Suppression of product degradation due to corrosion - Extension of product lifespan - Reduction of maintenance costs

In the semiconductor manufacturing industry, measures to prevent foreign matter contamination are crucial for maintaining product quality. Particularly in manufacturing under cleanroom conditions, the cleanliness of mask materials significantly affects product yield. Watanabe Shokai's glass epoxy substrate silicone rubber sheets are produced in a clean environment, reducing the risk of foreign matter contamination. They can be integrally molded with various substrates and are suitable for diverse applications such as plating masks. 【Usage Scenarios】 - Plating masks for lead frames and connector manufacturing - Use in cleanroom environments 【Benefits of Implementation】 - Reduced risk of foreign matter contamination - Improved product yield - Compatibility with various substrates

In the railway industry, the safety and durability of vehicles are the top priorities. In particular, measures to protect passengers and equipment from vibrations and shocks during operation are essential. Inappropriate materials or designs can lead to vehicle damage or operational stoppages. Our silicone rubber sheets have excellent shock resistance and can be used in various parts of railway vehicles. 【Application Scenarios】 - Cushioning material for railway vehicles - Shock-absorbing material - Vibration countermeasures 【Benefits of Implementation】 - Improved vehicle durability - Ensured passenger safety - Reduced maintenance costs

In the energy sector, the protection of equipment is essential for ensuring stable power supply and safety. Particularly for devices used in high temperatures, high pressures, or harsh environments, it is necessary to minimize external influences and extend the lifespan of the equipment. Watanabe Shokai's silicone rubber sheets can be integrally molded with various substrates, contributing to the protection of energy-related equipment. 【Application Scenarios】 - Protection of equipment in power plants - Insulation protection in substations - Protection of solar power generation systems 【Benefits of Implementation】 - Improved equipment protection performance - Extended lifespan of devices - Reduced maintenance costs

In the aerospace industry, protecting components in high-temperature environments is essential. In particular, materials with high heat resistance and reliability are required for engine and airframe structural components. Conventional materials can suffer from degradation or deformation due to heat, potentially compromising product safety and durability. Our glass epoxy substrate silicone rubber sheets excel in heat resistance and maintain stable performance even in harsh environments. The integrated molding with glass epoxy substrates also allows for compatibility with various shapes. 【Application Scenarios】 - Sealing of engine components - Protection of airframe structural components - Protection of electronic devices in high-temperature environments 【Benefits of Implementation】 - Increased longevity of components due to improved heat resistance - Stable performance maintenance in harsh environments - Enhanced design flexibility due to compatibility with diverse shapes

In the telecommunications industry, protecting electronic devices is crucial for waterproof applications. High waterproof performance is required to safeguard internal precision components from rainwater and humidity. Insufficient waterproof measures can lead to equipment failure and communication issues. Watanabe Shokai's glass epoxy substrate silicone rubber sheets enable integrated molding with various base materials, providing high waterproof performance and enhancing the reliability of communication devices. 【Usage Scenarios】 - Base stations - Communication cable connection points - Outdoor communication equipment - Waterproof connectors 【Benefits of Implementation】 - Protection of equipment due to high waterproof performance - Achievement of long product lifespan - Reduction of maintenance costs

In the electronics industry, as products become smaller and more densely packed, heat dissipation measures have become an important issue. Particularly for electronic components used in high-temperature environments, efficient heat dissipation affects the reliability and lifespan of the products. If appropriate heat dissipation measures are not implemented, it can lead to performance degradation or failure of the components. Watanabe Shokai's silicone rubber sheets can be integrally molded with various substrates, contributing to heat dissipation measures for electronic devices. [Usage Scenarios] - Circuit boards for electronic devices - Lead frames - Connectors [Effects of Implementation] - Improved adhesion to circuit boards - Enhanced heat dissipation performance - Increased product reliability