Processing examples of NBR rubber frame gaskets with inner and outer R edges | High precision response through water jet processing
■Overview of Processing Example Product Name: Frame Gasket with Inner and Outer R Dimensions: Inner and Outer R Shape / Frame Shape (as specified in the drawing) This example involves the processing of an NBR rubber gasket used in the opening of a device. The inner and outer perimeters have R specifications, requiring interference prevention during assembly and stable sealing performance. By adopting water jet processing, which excels in shape reproducibility without the use of a die, we have manufactured it with precision as per the design.
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■Product Features (Material: NBR Rubber) NBR (Nitrile Rubber) is a synthetic rubber with excellent oil resistance, making it ideal for seals in fuel oils and lubricants. It also boasts superior mechanical strength and wear resistance, and is widely used in O-rings, gaskets, hoses, and more. However, its resistance to weather and ozone is low, making it unsuitable for outdoor use; it primarily excels in indoor hydraulic and pneumatic equipment. ■Processing Method (Water Jet Cutting) Water jet cutting is a method that uses high-pressure water to cut materials. It processes by spraying high-pressure water. By changing the injection nozzle according to the processing material, high-quality products can be produced in a short time. Additionally, the dimensional tolerances that are typically associated with manual processing are significantly improved, resulting in stable processing accuracy. The taper on cut surfaces from press processing can also be improved with water jet cutting.
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■Q&A Q: What is the purpose of making the inner and outer shapes R-shaped? A: It is to prevent stress concentration at the corners and to reduce interference during assembly. Q: Can you accommodate small lots and prototypes? A: Yes, we can handle it without the need for molds through water jet processing. Q: Can I consult you about material selection? A: Yes, we provide support from material selection based on the usage conditions. ■Processing of R-shaped frame gaskets at Daiko At Daiko, we provide comprehensive support for various rubber and resin gaskets, including NBR rubber, from material selection to processing method proposals and the production of custom shapes.
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Daiko is a manufacturer specialized in processing various industrial products, including gaskets and packing. With industry-leading processing equipment, including one of Japan's largest water jet cutting machines, and a wide range of materials such as joint sheets, rubber, resin, and metal, we meet our customers' diverse needs. Leveraging the technology and experience we have cultivated over 50 years, we provide high-quality, short-lead-time, and low-cost products to contribute to solving our customers' challenges. To respond to our customers' varied needs, Daiko's production bases are equipped with various processing facilities. Among them, the water jet cutting machines, with a total of four installed at our Osaka headquarters and Tokyo branch, boast one of the largest scales in the country. The maximum processing range is W4,000 × L5,500 mm, allowing for the high-precision manufacturing of large-diameter gaskets and packing. By maximizing material efficiency, we achieve the provision of 'high quality at low cost.'
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