内外ゴム List of Products and Services

Expansion joints (flexible joints/rubber joints) are used to prevent vibrations and noise generated from piping systems, absorb expansion and displacement due to temperature and pressure changes, and mitigate or prevent the effects of various dimensional changes during installation, as well as impacts from earthquakes and ground subsidence. They are considered essential components in piping systems. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks, and since then, we have added new products to meet customer needs, including the high-pressure P type integrated with PTFE and the F type. Today, our products are used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Excellent vibration absorption 2. Superior installation work due to the use of loose flanges For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (flexible joints/rubber joints) are used to prevent vibrations and noise generated from piping systems, absorb expansion and displacement due to temperature and pressure changes, and mitigate or prevent the effects of various dimensional changes during installation, as well as impacts from earthquakes and ground subsidence. They are considered essential components in piping installations. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks, and since then, new products have been added to meet customer needs, including the high-pressure P type integrated with PTFE and the F type. Today, they are used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Capable of accommodating large eccentricities 2. Excellent for installation work due to the use of loose flanges *Nominal diameters 20A to 40A are compliant with Ministry of Land, Infrastructure, Transport and Tourism specifications. For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (flexible joints/rubber joints) are used to prevent vibrations and noise generated from piping systems, absorb expansion and displacement due to temperature and pressure changes, as well as to accommodate various dimensional fluctuations during construction and mitigate or prevent the effects of earthquakes and ground subsidence. They are considered essential components in piping installations. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks. Since then, we have added new products to meet customer needs, including the high-pressure P type integrated with PTFE, known as the F type. Today, our products are used across a wide range of fields and various industries, from household drinking water to chemical plant piping for liquids. 【Features】 1. Capable of accommodating large eccentricities 2. Excellent installation work due to the use of loose flanges For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (rubber joints) are used for preventing vibrations and noise generated from piping systems, absorbing expansion and displacement due to temperature and pressure changes, as well as accommodating various dimensional fluctuations during installation and mitigating or preventing the effects of earthquakes and ground subsidence. They are considered essential components in piping systems. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks, and since then, it has added new products to meet customer needs, including the high-pressure P type integrated product F type with PTFE. Today, it is used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Has a larger allowable displacement than the P type. 2. Durable and stable due to the combination of strong reinforcing fibers and reinforcing steel wires. 3. Uses EPDM for the inner and outer rubber, offering excellent chemical resistance and weather resistance. 4. Excellent for installation work due to the use of loose flanges. For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (rubber joints) are used for preventing vibrations and noise generated from piping systems, absorbing expansion and displacement due to temperature and pressure changes, as well as accommodating various dimensional fluctuations during installation and mitigating or preventing the effects of earthquakes and ground subsidence. They are considered essential components in piping equipment. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R-type for elevated water tanks. Since then, it has added new products to meet customer needs, including the high-pressure P-type integrated product F-type with PTFE. Today, it is used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Low deformation stress, suitable for vibration damping and expansion absorption in low-pressure plastic piping. 2. Excellent installation work due to the use of loose flanges. For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (rubber joints) are used for preventing vibrations and noise generated from piping systems, absorbing expansion and displacement due to temperature and pressure changes, as well as accommodating various dimensional fluctuations during construction and mitigating or preventing the effects of earthquakes and ground subsidence. They are considered essential components in piping installations. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks, and since then, it has added new products to meet customer needs, including the high-pressure P type integrated product F type with PTFE. Today, it is used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Low deformation stress, suitable for vibration damping and expansion absorption in low-pressure plastic piping. 2. Excellent installation work due to the use of loose flanges. For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (flexible joints/rubber joints) are used to prevent vibrations and noise generated from piping systems, absorb expansion and displacement due to temperature and pressure changes, and mitigate or prevent the effects of various dimensional changes during installation, as well as impacts from earthquakes and ground subsidence. They are considered essential components in piping systems. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks. Since then, it has added new products to meet customer needs, including the high-pressure P type integrated with PTFE and the F type. Today, it is used by a wide range of customers in various industries, from household drinking water to chemical plant piping. 【Features】 1. Excellent vibration absorption 2. Superior installation work due to the use of loose flanges For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (rubber joints) are used to prevent vibrations and noise generated from piping systems, absorb expansion and displacement due to temperature and pressure changes, and mitigate or prevent the effects of various dimensional changes during installation, as well as impacts from earthquakes and ground subsidence. They are considered essential components in piping installations. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R-type for elevated water tanks. Since then, it has added new products to meet customer needs, including the high-pressure P-type integrated product F-type with PTFE. Today, it is used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Stable durability due to the combination of strong reinforcing fibers and reinforcing steel wires. 2. EPDM is used for the inner and outer rubber, providing excellent chemical resistance and weather resistance. 3. The use of loose flanges facilitates installation work. For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (rubber joints) are used for preventing vibrations and noise generated from piping systems, absorbing expansion and displacement due to temperature and pressure changes, as well as accommodating various dimensional fluctuations during installation and mitigating or preventing impacts from earthquakes and ground subsidence. They are considered essential components in piping installations. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks, and since then, we have added new products to meet customer needs, including the F type, which is an integrated product with the high-pressure P type PTFE. Today, our products are used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Stable durability due to the combination of strong reinforcing fibers and reinforcing steel wires. 2. Use of EPDM for the inner and outer rubber, providing excellent chemical resistance and weather resistance. 3. Excellent installation workability due to the use of loose flanges. For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (rubber joints) are used to prevent vibrations and noise generated from piping systems, absorb expansion and displacement due to temperature and pressure changes, and mitigate or prevent the effects of various dimensional changes during construction, as well as impacts from earthquakes and ground subsidence. They are considered essential components in piping installations. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks, and since then, it has added new products to meet customer needs, including the high-pressure P type integrated product F type with PTFE. Today, it is used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Greater allowable displacement than the P type 2. Stable durability with a combination of strong reinforcing fibers and reinforcing steel wires 3. Uses EPDM for inner and outer rubber, offering excellent chemical resistance and weather resistance 4. Excellent for installation work due to the use of loose flanges For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (rubber joints) are used for preventing vibrations and noise generated from piping systems, absorbing expansion and displacement due to temperature and pressure changes, as well as accommodating various dimensional fluctuations during installation and mitigating or preventing impacts from earthquakes and ground subsidence. They are considered essential components in piping installations. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks, and since then, it has added new products to meet customer needs, including the high-pressure P type integrated product F type with PTFE. Today, it is used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. A sponge core is embedded inside the arch of the P type to create a straight inner surface, preventing liquid accumulation. 2. The use of loose flanges enhances installation work. For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (rubber joints) are used for preventing vibrations and noise generated from piping systems, absorbing expansion and displacement due to temperature and pressure changes, as well as accommodating various dimensional fluctuations during installation and mitigating or preventing the effects of earthquakes and ground subsidence. They are considered essential components in piping installations. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R-type for elevated water tanks, and since then, it has added new products to meet customer needs, including the high-pressure P-type integrated product with PTFE, known as the F-type. Today, it is used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Low-pressure type with PTFE (polytetrafluoroethylene) inner surface coating 2. The liquid-contact part (inner surface) uses PTFE, providing excellent chemical resistance 3. Integration with durable and strong rubber improves resistance to external impacts For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (rubber joints) are used to prevent vibrations and noise generated from piping systems, absorb expansion and displacement due to temperature and pressure changes, as well as to accommodate various dimensional fluctuations during construction and mitigate or prevent impacts from earthquakes and ground subsidence. They are considered essential components in piping installations. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks. Since then, it has added new products to meet customer needs, including the high-pressure P type integrated product F type with PTFE. Today, it is used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Pressure type PTFE (polytetrafluoroethylene) inner surface coating type 2. Uses PTFE in the liquid contact area (inner surface), providing excellent chemical resistance 3. Improved resistance to external impacts through integration with durable and strong rubber For more details, please contact us or refer to the catalog.

• Pipe Fittings

Expansion joints (rubber joints) are used for preventing vibrations and noise generated from piping systems, absorbing expansion and displacement due to temperature and pressure changes, as well as accommodating various dimensional fluctuations during construction and mitigating or preventing impacts from earthquakes and ground subsidence. They are considered essential components in piping installations. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks, and since then, it has expanded to include new products that meet customer needs, such as the high-pressure P type integrated with PTFE and the F type. Today, it is used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Pressure-type PTFE (polytetrafluoroethylene) inner surface coating type 2. Uses PTFE in the liquid contact area (inner surface), offering excellent chemical resistance 3. Improved resistance to external impacts due to integration with durable and strong rubber For more details, please contact us or refer to the catalog.

• Pipe Fittings

It absorbs uneven settlement of soft ground such as landfill sites, deflection of piping for water supply, sewage treatment plants, agricultural water, power plants, and expansion due to temperature changes. Since the launch of the low-pressure R type for elevated water tanks in 1970, the E-P joint has added new products to meet customer needs, including the integrated high-pressure P type PTFE and the F type. It is now used by a wide range of customers across various industries, from household drinking water to chemical plant liquid piping. 【Features】 1. Absorbs large displacements with relatively short face-to-face dimensions. 2. Can be used for vibration resistance as it can absorb displacements in all directions. 3. The inner surface is straight, making it difficult for solids to accumulate. For more details, please contact us or refer to the catalog.

• Pipe Fittings

A float is a device that captures information about various liquid levels and operates as a display or switch for equipment, used in industrial and household devices that control all types of liquids. With the advanced technology of the Nakaigomu Company, we also manufacture fuel floats and tank floats. We maintain a very high position in the adoption share among major domestic automobile manufacturers. It is suitable for automotive fuel tanks, motorcycle fuel tanks, carburetors, and various sensors. For more details, please contact us.

• Fuel system parts

A diaphragm membrane is a very thin rubber membrane (thickness 0.15 mm or more) used inside meters that measure gas flow. It is a part that requires high precision and durability, and is manufactured using highly advanced technology from the Inner and Outer Rubber Company. It is suitable for use inside city gas meters, propane meters, and other measuring instruments. For more details, please contact us.

• Rubber

A diaphragm membrane is a very thin rubber membrane (thickness 0.15 mm or more) used inside gas flow measurement meters. It is a part that requires high precision and durability, manufactured using highly advanced technology by a rubber company. It is suitable for use inside city gas meters, propane meters, and other measuring instruments. For more details, please contact us.

• Rubber

This product automatically activates and turns on the electrical circuit when it detects seismic motion (P-waves or S-waves) above a set acceleration (in Gs). It is designed to work in combination with control circuits for elevators, general equipment, and commercial facilities, automatically activating during an earthquake to control the stopping of equipment and alarms. ● Low false activation due to earthquake judgment by microcontroller ● Equipped with a built-in battery for power outage support ● Resetting and operation confirmation can be remotely operated via contact signals ● Settable acceleration can be adjusted to any of three levels *For more details, please request materials or download the catalog.

• Other security and surveillance systems

Since our business partnership with Sumitomo Rubber Industries, Ltd. (formerly Dunlop) in 1972, we have expanded our demand alongside the rapid motorization of our country. Our quality has been highly regarded by the industry, and we continue to build trust and achievements. For more details, please contact us.

• Rubber
• Other Auto Parts