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The G standard established for cylindrical and flat surface fixation according to JIS standards (JIS B2401) is a size series widely used in various fields within Japan. Sakura Seal Co., Ltd. not only offers general-purpose materials based on JIS standards but also provides a range of high-performance materials, including the "Floro Power Series" featuring Perfluoroelastomer (FFKM) at its peak, and the "Floro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing. We support the appropriate selection of O-rings in terms of both size and material.

• Safety and consumables
• Water and sewerage pipe fittings
• Railway Construction

This is a size series derived from the G standard (JIS B2401). Sakura Seal Co., Ltd. supports the appropriate selection of O-rings in terms of both size and material, offering not only general-purpose materials based on JIS standards but also various high-performance materials such as the "Fluoro Power Series," which features Perfluoroelastomer (FFKM) at its peak, and the "Fluoro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing.

• Safety and consumables
• Water and sewerage pipe fittings
• Railway Construction

The V standard established for vacuum flanges according to the JIS standard (JIS B2401) is a size series widely used in the vacuum equipment industry, alongside the gaskets from the old JIS standard (JIS B2290). Sakura Seal Co., Ltd. supports the appropriate selection of O-rings in terms of both size and material, offering not only general-purpose materials according to JIS standards but also various high-performance materials such as the "Floro Power Series" topped with Perfluoroelastomer (FFKM), and the "Floro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing.

• Safety and consumables
• Water and sewerage pipe fittings
• Railway Construction

The S standard, which is set with a thin wire diameter for use in small spaces for cylindrical and flat surface fixation, is a widely utilized size series for these applications. Sakura Seal Co., Ltd. supports appropriate O-ring selection in terms of both size and material, offering not only general-purpose materials according to JIS standards but also various high-performance materials such as the "Floro Power Series," which features Perfluoroelastomer (FFKM) at its peak, and the "Floro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing.

• Water and sewerage pipe fittings
• Power generation facilities
• Water Supply Facilities

The SS standard, often incorporated into small machines, is a size series composed of the smallest O-rings. Sakura Seal Co., Ltd. supports the appropriate selection of O-rings in terms of both size and material, offering not only general-purpose materials based on JIS standards but also various high-performance materials such as the "Floro Power Series," which features Perfluoroelastomer (FFKM) at its peak, and the "Floro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing.

• Waterproof, moisture-proof, explosion-proof lighting fixtures
• Safety and consumables
• Water and sewerage pipe fittings

This is a size series established for use in sports and for fixing cylindrical surfaces, based on the old JIS standard (JIS WP1516). Sakura Seal Co., Ltd. not only offers general-purpose materials based on JIS standards but also provides a variety of high-performance materials, including the "Floro Power Series," which features Perfluoroelastomer (FFKM) at its peak, and the "Floro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing. We support appropriate O-ring selection in terms of both size and material.

• Water and sewerage pipe fittings
• Water Supply Facilities
• Sewerage facilities

This is a size series established for fixing cylindrical surfaces, based on the old JIS standard (JIS WG1517). Sakura Seal Co., Ltd. not only offers general materials based on JIS standards, but also provides a variety of high-performance materials, including the "Floro Power Series" featuring Perfluoroelastomer (FFKM) at its peak, and the "Floro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing. We support appropriate O-ring selection in terms of both size and material.

• Water and sewerage pipe fittings
• Power generation facilities
• Water Supply Facilities

This is a size series that is globally used for aircraft and other applications, established by SAE International in the United States. Sakura Seal Co., Ltd. supports the appropriate selection of O-rings in terms of both size and material, offering a variety of high-performance materials such as the "Floro Power Series," which features Perfluoroelastomer (FFKM) at its peak, as well as the "Floro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing, in addition to general-purpose materials based on JIS standards.

• Safety and consumables
• Water and sewerage pipe fittings
• Railway Construction

The JASO F404 standard, established by the Japan Automobile Technology Association for use in motion, cylindrical surface fixation, and flat surface fixation, is a widely used size series for automotive applications. Sakura Seal Co., Ltd. not only offers general-purpose materials based on JIS standards but also provides a variety of high-performance materials in the "Floro Power Series," topped by Perfluoroelastomer (FFKM), as well as the "Floro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing, thereby supporting appropriate O-ring selection in terms of both size and material.

• Safety and consumables
• Water and sewerage pipe fittings
• Railway Construction

The P standard, established by the JIS standard (JIS B2401) for dynamic use, cylindrical surface fixation, and flat surface fixation, is the most widely used size series in Japan. Sakura Seal Co., Ltd. not only offers general-purpose materials according to JIS standards but also provides various high-performance materials such as the "Floro Power Series," which features Perfluoroelastomer (FFKM) at its peak, and the "Floro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing. We support the appropriate selection of O-rings in terms of both size and material.

• Safety and consumables
• Water and sewerage pipe fittings
• Railway Construction

In addition to general materials according to JIS standards, we also produce large-diameter O-rings using various high-performance materials from the "Fluoro Power Series," which features Perfluoroelastomer (FFKM) at its peak, as well as the "Fluoro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing. We support optimal O-ring procurement with a variety of molding methods.

• Safety and consumables
• Water and sewerage pipe fittings
• Railway Construction

Fluororubber is the material that Sakura Seal Co., Ltd. excels at among various materials. In particular, the FluoroPower series, which features high-performance fluororubbers with various properties, topped by Perfluoroelastomer (FFKM), has received high praise as an irreplaceable special grade that characterizes our company. The FluoroPower series meets extremely stringent performance requirements, such as heat resistance exceeding 300°C and chemical resistance to polar solvents.

• Safety and consumables
• Water and sewerage pipe fittings
• Railway Construction

Fluorine rubber is the material that Sakura Seal Co., Ltd. excels at among many materials. Among them, the various types of Fluoro-Up are a series of special fluorine rubber that reduces rubber-specific properties such as adhesion and sticking. Unlike coating treatments like PTFE that lose their effectiveness immediately after use, the effects of Fluoro-Up last for a long time. In seals made of rubber, issues can arise due to friction resistance and adhesion in dynamic parts, or due to sticking in opening and closing sections, which can cause the sealing material to come off. The Fluoro-Up series contributes to resolving such problems.

• Safety and consumables
• Water and sewerage pipe fittings
• Railway Construction

The material is made of fluororubber (type 2), which excels in heat resistance, chemical resistance, oil resistance, and weather resistance. Before JIS B2401:2012 designated it as FKM-70, it was referred to as Type D (old JIS standard = JIS B2401:2005). Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small to large diameter rings, not only in general standard sizes according to JIS standards but also supports the appropriate selection of O-rings in terms of both material and size. * Various types of fluororubber are the specialty of Sakura Seal Co., Ltd. * We also accommodate shapes other than O-rings.

• Safety and consumables
• Water and sewerage pipe fittings
• Railway Construction

The backup ring specified in JIS B2401-4 (formerly JIS B2407 backup ring for O-rings) is an auxiliary material used for O-rings in high-pressure and dynamic applications. At Sakura Seal, we can also manufacture special dimensions beyond those specified by JIS and other standards, so please feel free to contact us.

• Power generation facilities
• Water Supply Facilities
• Sewerage facilities