Compatible with various conditions! This is a high-temperature zero-asbestos gasket that does not contain asbestos.
The NAPI series is a high-performance gasket that combines metal and inorganic materials, offering excellent sealing properties and high heat resistance (400℃ to 1200℃), and can be used at lower surface pressures than metal gaskets. It features a structure where a robust heat-resistant inorganic material that contains no asbestos is encapsulated in metals such as copper and SUS. We can also accommodate material changes to meet specific requirements. It is widely used in fields where sealing performance and durability are required at high temperatures. 【Features】 ○ High-temperature zero-asbestos gasket ○ Heat resistance over 600℃ ○ Compliant with IOS22262-1 ○ Various conditions can be accommodated by changing the metal materials ○ Support for material changes, etc. For more details, please contact us or download the catalog.
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basic information
【Lineup】 ○ NAPI 600 Series → Made of copper and SUS304 ○ NAPI 800 Series / 800E Series → SUS Zero Asbestos Board ○ NAPI 816 Series → Heat-resistant and corrosion-resistant SUS Zero Asbestos Board ○ NAPI 900 Series / 1200 Series ○ NAPI Metal Flat Gasket ○ NAPI Copper Packing (Tough Pitch Copper, Oxygen-Free Copper, etc.) ○ NAPI Best Gasket / Head Gasket ○ NAPI Metal Shim (Stainless Steel, Iron, Brass, etc.) ● For more details, please contact us or download the catalog.
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Asbestos testing in Japan is conducted using the JIS method, which employs "X-ray diffraction" and "phase contrast and dispersion microscopy." However, this method has been criticized for its flaws, such as misidentifying other particles as asbestos and potentially missing asbestos content below 5%. Therefore, even products deemed non-asbestos in Japan may be determined to contain asbestos when tested using the polarized light microscopy (PLM) method, which is recognized as a more reliable method in Europe and the United States. To avoid such situations, a standard called "Zero Asbestos," which ensures that products contain no asbestos and have passed inspections using polarized light microscopy (PLM) and even more reliable electron microscopy, is gaining traction. In July 2012, an ISO asbestos analysis method was published, and the JIS method was excluded, accelerating this movement domestically. In anticipation of this trend, our company has obtained the trademark for "Zero As" and has promptly introduced inspections using polarized light microscopy and electron microscopy. Since 1990, all our products have been certified as Zero Asbestos, so please use the "Zero As Gasket NAPI Series" with confidence.