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joint Product List

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Floppy Joint "J Series S Type"

A floppy joint that achieves high flexibility and large eccentricity.

The "J Series S Type" is a highly flexible flange-type joint. Thanks to its special structure, it offers high flexibility and allows for significant eccentricity with a short face-to-face dimension. It is suitable for connecting rainwater pipes, blower pipes, and piping that requires frequent installation and removal. 【Features】 ■ High flexibility ■ Large eccentricity *For more details, please download the PDF or contact us.

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AT Joint "F Series A Type"

Excellent heat resistance, cold resistance, non-stick properties, and vibration resistance! Chemical-resistant rubber joint lined with fluororesin on the inner surface.

The "F Series Type A" is a chemical-resistant rubber joint lined with fluororesin on the inside. It excels in heat resistance, cold resistance, non-stick properties, and vibration damping. It can be used for high-temperature hot water piping, food piping, various chemical piping, ultra-pure water piping, and hot spring piping applications. 【Features】 ■ Chemical resistance ■ Heat resistance ■ Cold resistance ■ Non-stick properties ■ Vibration damping *For more details, please refer to the PDF document or feel free to contact us.

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Global Joint "F Series G Type"

A global joint that achieves both delivery and suction!

The "F Series G Type" is a standard spherical flexible joint for vibration-damping around pumps. Despite its short face-to-face dimensions, it achieves significant vibration-damping effects. It is suitable for applications such as building service piping, HVAC sanitary piping, and marine piping. 【Features】 ■ The spherical shape provides stability against internal pressure and allows for use in both delivery and suction applications due to its resistance to negative pressure. ■ The spherical design results in minimal dimensional changes under pressure compared to other types of joints. *For more details, please download the PDF or contact us.

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Heat-resistant joint "Q Series"

Introducing a rubber joint for high-temperature air made of silicone rubber and heat-resistant fibers!

The "Q Series" is a rubber joint for high-temperature air, composed of silicone rubber and heat-resistant fibers. It includes a lineup of products such as the flexible "F type," expansion "E type," bend "B type," and reducer "R type." These products are designed to absorb vibrations, noise, and displacements in lines carrying high-temperature air, and can be used in piping for high-pressure blowers and drying lines for food products. 【Partial Lineup】 ■ Flexible "F type" ■ Expansion "E type" ■ Bend "B type" ■ Reducer "R type" ■ Bellows "J type" *For more details, please refer to the PDF document or feel free to contact us.

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Special item: Rubber joint

Transparent silicone tubes and flanges with different specifications on the left and right! Please feel free to consult us about any special items.

Hachiken is a specialized manufacturer of rubber joints for piping, producing all products domestically. We would like to introduce some examples of our custom products. We have manufactured a "transparent silicone tube" with a diameter of φ165×200 and a "left and right different standard flange flex" of 65A×200. Our company is capable of accommodating various special specifications. Please feel free to consult us about anything. 【Production Examples】 ■ Transparent Silicone Tube: φ165×200 ■ Left and Right Different Standard Flange Flex: 65A×200 *For more details, please refer to the PDF document or feel free to contact us.

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Estimated service life: rubber joint

Calculate the estimated useful life based on usage conditions! Please use it as a guideline for regular inspections and replacement timing.

The "rubber joint" is made of organic materials such as rubber and synthetic fibers, so it has a limited lifespan. Additionally, its lifespan can vary significantly depending on the usage conditions. By downloading the PDF document, you can view the "Service Life Coefficient Table" and the "Pressure Unit Conversion Table." Please use these to estimate the expected service life based on your usage conditions, as a guideline for regular inspections and replacement timing. The standard service life is set for fluids that are water. *For more details, please refer to the PDF document or feel free to contact us.*

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