Compatible with small diameter rings using water jet processing.
■Overview of Processing Example Product Name: TOMBO No.1995 Gasket Dimensions: 22×16×1t (Inner Diameter Tolerance 0 to +0.5) This processing example involves the production of a small-diameter ring-shaped gasket using TOMBO No.1995. Due to the small diameter and specified inner diameter tolerance, water jet processing was adopted to achieve both shape reproducibility and dimensional accuracy. By adjusting the cutting conditions and cutting sequence, a finish that considers assembly compatibility has been realized.
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■Product Features (TOMBO No. 1995) TOMBO No. 1995 is a general-purpose joint sheet made by blending inorganic fibers and aramid fibers with oil-resistant rubber (NBR). It is compatible with fluids such as water, oil, and brine, and excels in the balance of processability, sealing properties, and flexibility. It is commonly used as gaskets for piping flanges and equipment in various factories across many fields. ■Processing Method (Water Jet Cutting) Water jet cutting is a hydraulic cutting machine 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 achieved through manual processing are significantly improved, resulting in stable processing accuracy. The taper on the cut surface from press processing can also be improved with water jet cutting.
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■Q&A Q1. What is the intended use of TOMBO No.1995 gasket? A. It is widely used as a seal for piping flanges and equipment handling water, oil, brine, etc., and is adopted in applications where versatility and stable sealing performance are required. Q2. Can machining accuracy be ensured even for small diameter gaskets? A. Even for small diameter shapes, machining that considers inner diameter tolerance specifications and concentricity can be achieved by optimizing cutting conditions and holding methods. Q3. Why did you choose water jet processing instead of press processing? A. Due to the small diameter and the requirement for inner diameter tolerance specifications, we adopted water jet processing, which allows cutting according to data without using a mold, emphasizing shape reproducibility and dimensional stability. Q4. Is it possible to handle prototypes or small quantities? A. We can accommodate prototypes and small lot production based on drawing data. We also support processing while confirming shapes and conducting assembly verification. Q5. Can you accommodate other sizes and shape changes? A. We can flexibly respond to dimensional changes, hole diameter changes, and shape modifications. We also provide processing proposals tailored to applications and assembly conditions.
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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.'
