桜シール List of Products and Services

We manufacture and sell a wide variety of materials with various characteristics of Sakura seals, ranging from tiny micro O-rings to large-diameter extra-large O-rings. In addition to sizes based on the Japanese Industrial Standards (JIS B2401), we offer a range of sizes subdivided by various industries and support appropriate size selection along with groove design.

• Other machine elements
• CVD Equipment
• Rubber

The P standard, established by the JIS standard (JIS B2401) for dynamic, cylindrical surface fixing, and flat surface fixing applications, is the most widely used size series in Japan. Sakura Seal Co., Ltd. not only offers general-purpose materials based on the JIS standard but also provides various 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.

• Other machine elements
• Hydraulic Equipment
• Piping Materials

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, as well as 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.

• Other machine elements
• Hydraulic Equipment
• Piping Materials

The V standard established for vacuum flanges according to JIS standards (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 based on JIS standards but also various high-performance materials in the "Floro Power Series," topped by Perfluoroelastomer (FFKM), and the "Floro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing.

• Sealing
• Other machine elements
• Pipe Fittings

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. not only offers general-purpose materials based on 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, thereby supporting appropriate O-ring selection in terms of both size and material.

• Other machine elements
• Piping Materials
• Hydraulic Equipment

This is a size series 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 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.

• CVD Equipment
• Etching Equipment
• Other machine elements

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

• Sealing
• CVD Equipment
• Etching Equipment

Made of perfluoroelastomer, it has extremely excellent chemical resistance and also excels in heat resistance and mechanical properties. Sakura Seal Co., Ltd. offers a wide range of O-rings in various sizes, from very small O-rings to large diameter rings, not only in accordance with general standard sizes based on JIS standards but also supports the appropriate selection of O-rings in terms of both material and size. * Various types of fluororubber, including perfluoro, are the materials that Sakura Seal Co., Ltd. specializes in the most. * We also accommodate shapes other than O-rings.

• CVD Equipment
• Etching Equipment
• Sealing

This is a material made of perfluoroelastomer, which has significantly improved heat resistance to a very high level. It possesses the best high-temperature characteristics among current rubber materials while also having excellent chemical resistance. Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, not only in standard sizes according to JIS standards but also in various sizes, supporting the appropriate selection of O-rings in terms of both material and size. * Various fluororubbers, including perfluoro, are the specialty of Sakura Seal Co., Ltd. * We also accommodate shapes other than O-rings.

• Etching Equipment
• Other machine elements
• Sealing

It is made of a perfluoroelastomer material that possesses extremely excellent heat resistance and chemical resistance, and does not use any fillers (non-carbon, non-metal), resulting in superior low particle characteristics and excellent plasma resistance. Sakura Seal Co., Ltd. offers a wide variety of O-rings, ranging from very small O-rings to large diameter rings, not only in accordance with general standard sizes based on JIS standards but also supports the appropriate selection of O-rings in terms of both material and size. * Various types of fluororubber, including perfluoro, are the materials that Sakura Seal Co., Ltd. specializes in the most. * We also accommodate shapes other than O-rings.

• CVD Equipment
• Etching Equipment
• Other machine elements

This material is a perfluoroelastomer that has improved pressure resistance and heat resistance, and it also possesses excellent chemical resistance. Additionally, it excels in blister resistance (explosion-proof properties) and has passed the RGD test (ISO 23936-2 certification). Sakura Seal Co., Ltd. offers a wide variety of O-rings, ranging from very small O-rings to large diameter rings, not only in standard sizes according to JIS standards but also in various sizes and materials, supporting the appropriate selection of O-rings in both material and size. * Various fluororubbers, including perfluoro, are the materials that Sakura Seal Co., Ltd. specializes in the most. * We also accommodate shapes other than O-rings.

• Etching Equipment
• Piping Materials
• Other machine elements

This is a fluororubber (terpolymer) material with improved heat resistance. It also possesses excellent chemical resistance and has resistance to strong acids and steam. Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, in various sizes beyond the general standard sizes according to JIS standards, and we support 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.

• Other machine elements
• CVD Equipment
• Sealing

The properties and characteristics of O-rings, such as heat resistance, chemical resistance, and compression set, are generally determined by the performance of the material. Sakura Seal Co., Ltd. responds to the diverse and segmented performance requirements across a wide range of industries with a rich lineup of materials. In addition to general-purpose materials based on JIS standards, we offer various fluororubber materials with distinctive properties, including the "Fluoro Power Series," featuring high-performance materials topped by Perfluoroelastomer (FFKM), and the "Fluoro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing, to support appropriate material selection.

• Other machine elements
• CVD Equipment
• Rubber

It is the most versatile material made of nitrile rubber. It has oil resistance and abrasion resistance, but it is inferior in weather resistance. Before JIS B2401:2012 defined it as NBR-70-1, it was referred to as Type A (old JIS standard = JIS B2401:2005). Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, in addition to the general standard sizes according to JIS standards, and we support the appropriate selection of O-rings in terms of both material and size. * We also accommodate shapes other than O-rings.

• Piping Materials
• Hydraulic Equipment
• Other machine elements

It is made of nitrile rubber, which has high hardness and excellent pressure resistance. It has oil resistance and abrasion resistance, but is inferior in weather resistance. Before JIS B2401:2012 designated it as NBR-90, it was referred to as Type B (old JIS standard = JIS B2401:2005). Sakura Seal Co., Ltd. offers a wide variety of O-rings, ranging from very small O-rings to large diameter rings, in addition to the general standard sizes according to JIS standards, and we support the appropriate selection of O-rings in terms of both material and size. * We also accommodate shapes other than O-rings.

• Hydraulic Equipment
• Piping Materials
• Other machine elements

Among the materials made of nitrile rubber, acrylonitrile is highly contained, and due to its excellent oil resistance, it can also be used for fuel oils. However, it is inferior in weather resistance. Before JIS B2401:2012 established NBR-70-2, it was referred to as Type 2 (old JIS standard = JIS B2401:2005). Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings 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. * We also accommodate shapes other than O-rings.

• Fuel system parts
• Engine parts
• Other machine elements

The material is made of silicone rubber, which excels in heat resistance, cold resistance, and weather resistance, but has inferior oil resistance and physical properties. Before JIS B2401:2012 defined VMQ-70, it was referred to as Type 4C (old JIS standard = JIS B2401:2005). Sakura Seal Co., Ltd. offers a wide range of O-rings in various sizes, from very small O-rings to large diameter rings, in addition to the general standard sizes specified by JIS standards, and we support the appropriate selection of O-rings in terms of both material and size. * At this time, there are no materials that meet the standards of VMQ-70 as defined by JIS B2401:2012. * We also accommodate shapes other than O-rings.

• Piping Materials
• Other machine elements
• Food Processing Equipment

The material is made of fluororubber (type 2), which excels in heat resistance, chemical resistance, oil resistance, and weather resistance. Before JIS B2401:2012 defined it as FKM-70, it was referred to as Type 4D (old JIS standard = JIS B2401:2005). Sakura Seal Co., Ltd. offers a wide variety of O-rings, ranging from very small O-rings to large diameter rings, in addition to the general standard sizes specified by JIS standards, and we support 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.

• Sealing
• Etching Equipment
• Piping Materials

Fluorine rubber is the material that Sakura Seal Co., Ltd. excels at among many others. Among them, the various types of Fluoro-Up are a series of special fluorine rubber that reduces the unique properties of rubber, such as adhesion and sticking. Unlike coating treatments like PTFE that lose their effectiveness immediately after use, the effects of Fluoro-Up last for an extended period. 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 areas, which can cause the sealing material to come off. The Fluoro-Up series contributes to resolving such problems.

• Sealing
• Other machine elements
• Rubber

This material is made of fluororubber (type 2), which reduces phenomena such as stickiness and gas release characteristic of rubber materials, making it ideal for high vacuum applications. Its heat resistance and chemical resistance are comparable to those of general-purpose FKM. Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, in various sizes and materials, and we support the appropriate selection of O-rings in both material and size. * Various types of fluororubber, including the Fluoro Up series, are the specialty of Sakura Seal Co., Ltd. * We also accommodate shapes other than O-rings.

• Sealing
• Piping Materials
• CVD Equipment

This material is made of fluororubber (type 2) that reduces the adhesive properties (stickiness) characteristic of rubber materials, maintaining low adhesion and low friction over a long period. Additionally, its heat resistance and chemical resistance are comparable to standard FKM materials. Sakura Seal Co., Ltd. offers a wide variety of O-rings, ranging from very small O-rings to large diameter rings, in both standard sizes according to JIS standards and custom sizes, providing support for the appropriate selection of O-rings in terms of both material and size. * Various types of fluororubber, including the Fluoro Up series, are the specialty of Sakura Seal Co., Ltd. * We also accommodate shapes other than O-rings.

• Other machine elements
• Etching Equipment

This material is made of fluororubber (type 2) that reduces phenomena such as stickiness (tackiness), adhesion, and gas release, which are characteristics of rubber materials. It has performance levels for heat resistance and chemical resistance comparable to general-purpose FKM. Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, in various sizes and specifications according to JIS standards, and supports the appropriate selection of O-rings in terms of both material and size. * The fluororubber series, including the Fluoro-Up series, is the material that Sakura Seal Co., Ltd. specializes in the most. * We also accommodate shapes other than O-rings.

• Piping Materials
• Rubber
• Other machine elements

This material is a type of fluororubber (type 3) that has been designed to reduce phenomena such as the stickiness and adhesion characteristic of rubber materials, as well as gas release, to a certain extent while providing high vacuum resistance. It also possesses excellent heat resistance and chemical resistance, including resistance to strong acids and steam. Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, in various sizes beyond the standard sizes specified by JIS standards, and we support the appropriate selection of O-rings in terms of both material and size. * Various types of fluororubber, including the Fluoro-Up series, are the materials that Sakura Seal Co., Ltd. specializes in the most. * We also accommodate shapes other than O-rings.

• Sealing
• Piping Materials
• CVD Equipment

Made of fluoropolymer (PTFE), it excels in chemical resistance, heat resistance, and surface lubricity. It is widely known by the common name Teflon, and while it has inferior elasticity and resilience compared to rubber materials, it demonstrates a certain level of sealing performance. Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, not only in standard sizes according to JIS standards but also in various sizes and materials, supporting the appropriate selection of O-rings in both material and size. * We also accommodate shapes other than O-rings.

• Beverage Production Equipment
• CVD Equipment
• Piping Materials

O-rings are the core products of Sakura Seal Co., Ltd. We offer a wide variety of materials, ranging from general-purpose materials according to JIS standards to high-performance materials such as Perfluoroelastomer (PF). We mold them into various sizes, from standard dimensions to custom sizes. Among these, O-rings made of fluororubber are our specialty. In addition to general-purpose FKM materials, we also provide various fluororubber materials with special properties, including FFKM. Sakura Seal's O-rings meet quality demands based on harsh usage environments, price demands from the ever-changing market, and short delivery time requirements.

• Other machine elements
• CVD Equipment
• Rubber

In addition to the general materials based on JIS standards, we also produce large-diameter O-rings using various high-performance materials from 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. We support optimal O-ring procurement with a variety of molding methods.

• Other machine elements
• Piping Materials
• Hydraulic Equipment

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 dimension products in addition to the dimensions specified by JIS and other standards, so please feel free to contact us.

• Hydraulic Equipment
• Pneumatic Equipment
• Water Hydraulic Equipment

You can consider the shapes of various manufacturers centered around the Sakura seal brand. We also handle a large number of non-standard oil seals, special sizes, and oil seals made from special materials, so please feel free to contact us.

• Hydraulic Equipment
• Other Auto Parts
• Other machine elements

We can manufacture U-packings (Y-packings) with basic shapes and materials, as well as packings with special shapes and materials, including dust seals. Please feel free to contact us.

• Hydraulic Equipment
• Other machine elements

We offer a wide range of V-packings made of fabric-inserted (or non-inserted) rubber (NBR or FKM) and PTFE (with fillers such as glass or graphite) in various dimensions. Please also consider our adapters.

• cylinder
• Other machine elements

Currently, the standard only includes O-rings, but in the old JIS B 2290, there were specifications for gaskets with square and round shapes for vacuum flanges, which are still in use today. Sakura Seal Co., Ltd. still manufactures each shape, and particularly for larger diameters, it is possible to produce them in custom dimensions.

• Sealing
• Other machine elements

The current standard only includes O-rings, but in the old JIS B 2290, there were specifications for gaskets with square and rounded shapes for vacuum flanges, which are still in use today. Sakura Seal Co., Ltd. continues to manufacture each shape, and particularly for larger diameters, it is possible to produce them in custom dimensions.

• Sealing
• Other machine elements
• High pressure cleaner

Currently, the standard only includes O-rings, but in the old JIS B 2290, there were specifications for gaskets with square and rounded shapes for vacuum flanges, which are still in use today. Sakura Seal Co., Ltd. continues to manufacture each shape, and particularly for larger diameters, they can be produced in custom dimensions.

• Sealing
• Other machine elements
• Beverage Production Equipment

The material is made of fluororubber (bipolymer type), which excels in heat resistance, chemical resistance, oil resistance, and weather resistance, and also has high hardness, making it capable of withstanding pressure. Before JIS B2401:2012 defined it as FKM-90, it did not belong to any official standards. Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, in various sizes, and 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.

• Sealing
• Etching Equipment
• Piping Materials

The material is made of silicone rubber, which excels in heat resistance, cold resistance, and weather resistance, but has inferior oil resistance and physical properties. Additionally, due to its softness, it is suitable for use in low-strength grooves. Sakura Seal Co., Ltd. offers a wide range of O-rings, from extremely small O-rings to large diameter rings, not only in standard sizes according to JIS standards but also supports the appropriate selection of O-rings in terms of both material and size. * We also accommodate shapes other than O-rings.

• Beverage Production Equipment
• Piping Materials
• Other machine elements

The material is made of ethylene propylene rubber, which excels in water resistance, chemical resistance, and weather resistance, but has inferior oil resistance. Before JIS B2401:2012 designated it as EPDM-70, it was treated under public standards as types 3 of the old JIS standard and types 5 of the JASO F404 standard. Sakura Seal Co., Ltd. offers a wide variety of O-rings, ranging from very small O-rings to large diameter rings, in addition to the general standard sizes specified by JIS standards, and we support the appropriate selection of O-rings in terms of both material and size. * We also accommodate shapes other than O-rings.

• Piping Materials
• Other Auto Parts
• Other machine elements

Made of chloroprene rubber, it has oil resistance and weather resistance. Sakura Seal Co., Ltd. offers a wide variety of O-rings, ranging from very small O-rings to large diameter rings, in addition to the standard sizes based on JIS standards. We will support you in selecting the appropriate O-ring in terms of both material and size. * We also accommodate shapes other than O-rings.

• Piping Materials
• Other Auto Parts
• Other machine elements

Made from hydrogenated nitrile rubber, it possesses excellent physical properties, making it highly resistant to pressure, as well as having heat resistance, oil resistance, and weather resistance. Before JIS B2401:2012 defined it as HNBR-70, it did not belong to any public standards. Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, in various sizes, in addition to the general standard sizes according to JIS standards, and we support the appropriate selection of O-rings in terms of both material and size. * We also accommodate shapes other than O-rings.

• Piping Materials
• Engine parts
• Hydraulic Equipment

Made of urethane rubber, it possesses extremely excellent physical properties, making it highly resistant to pressure and playing a very important role as a high-pressure sealing material. In addition to oil resistance, it is extremely brittle against water and has poor weather resistance. Sakura Seal Co., Ltd. offers a wide variety of O-rings, ranging from very small O-rings to large diameter rings, not only in standard sizes according to JIS standards but also supports the appropriate selection of O-rings in terms of both material and size. * We also accommodate shapes other than O-rings.

• Hydraulic Equipment
• Other machine elements
• Piping Materials

It is a white type of material made from perfluoroelastomer, which has extremely excellent chemical resistance and, due to the absence of carbon black as a filler, also excels in cleanliness and plasma resistance. 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, including perfluoro, are the specialty of Sakura Seal Co., Ltd. * We also accommodate shapes other than O-rings.

• CVD Equipment
• Etching Equipment
• Other machine elements

This is a material made of perfluoroelastomer, which has significantly improved heat resistance to a very high level. However, due to the development of Fluoropower FFS, which surpasses all performance characteristics including heat resistance and chemical resistance, we now recommend switching to it. Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, not only in standard sizes according to JIS standards but also in various sizes, supporting the appropriate selection of O-rings in terms of both material and size. * Various fluororubbers, including Perfluoro, are the materials that Sakura Seal Co., Ltd. specializes in the most. * We also accommodate shapes other than O-rings.

• CVD Equipment
• Etching Equipment
• Other machine elements

This material is a white type of perfluoroelastomer with improved heat resistance and also possesses excellent chemical resistance. Due to the absence of carbon black, it exhibits low particle characteristics and demonstrates outstanding plasma resistance. Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, not only in standard sizes according to JIS standards but also supports the appropriate selection of O-rings in terms of both material and size. * Various fluororubbers, including perfluoro, are the materials that Sakura Seal Co., Ltd. specializes in the most. * We also accommodate shapes other than O-rings.

• CVD Equipment
• Etching Equipment
• Other machine elements

Made of fluororubber (type 3), it has excellent chemical resistance and heat resistance, and is also resistant to strong acids and steam. Sakura Seal Co., Ltd. offers a wide variety of O-rings, ranging from very small O-rings to large diameter rings, in both standard sizes according to JIS standards and custom sizes. We support 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.

• Painting Machine
• CVD Equipment
• Other machine elements

This material is a white type made of fluororubber (type 3), which combines excellent chemical resistance and heat resistance, and its cleanliness (sanitary properties) is superior because it does not use carbon black as a filler. It also has resistance to strong acids and steam. Sakura Seal Co., Ltd. offers a wide range of O-rings, from very small O-rings to large diameter rings, not only in standard sizes according to JIS standards but also in various sizes, supporting appropriate O-ring selection 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.

• Other machine elements
• CVD Equipment
• Piping Materials

This is a fluororubber (terpolymer) material with improved pressure resistance, featuring excellent chemical resistance and heat resistance, as well as resistance to strong acids and steam. It also excels in blister resistance (explosion resistance) and has passed the RGD test (ISO 23936-2 certification). Sakura Seal Co., Ltd. offers a wide variety of O-rings, from very small O-rings to large diameter rings, not only in standard sizes according to JIS standards but also in various sizes and materials, supporting appropriate O-ring selection in both material and size. * Various types of fluororubber are the specialty of Sakura Seal Co., Ltd. * We also accommodate shapes other than O-rings.

• Other machine elements
• Power Transmission Equipment
• Piping Materials