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O-ring NBR-70-1 (Type A / Nitrile Rubber)

The O-ring cherry seal is molded from various materials, including NBR-70-1 (Type A/Nitrile rubber), and comes in a wide range of sizes.

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 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.

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

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O-ring NBR-90 (Type B / Nitrile Rubber)

The O-ring cherry seal is molded from various materials including NBR-90 (Type B/Nitrile rubber) and is available in a wide range of sizes.

Made of nitrile rubber, it has high hardness and excellent pressure resistance. It possesses oil resistance and abrasion resistance, but is inferior in weather resistance. Before JIS B2401:2012 defined 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 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.

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

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O-ring NBR-70-2 (Type 2 / Nitrile Rubber)

The O-ring cherry seal is molded from various materials, including NBR-70-2 (type 2 / nitrile rubber), and is available in a wide range of sizes.

Among the materials made of nitrile rubber, acrylonitrile is present in large quantities, allowing it to be used for fuel oil due to its excellent oil resistance. 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 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.

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

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O-ring CR-70 (Chloroprene rubber)

Material 'CR-70 (Chloroprene Rubber)' with O-ring cherry seal

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 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.

  • Safety and consumables
  • Water and sewerage pipe fittings

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O-ring

At O-Ring Sakura Seal, we offer a wide range of sizes and diverse materials, with over 20,000 types in stock for immediate delivery.

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, and we mold them into various sizes from standard dimensions to special dimensions. Among them, O-rings made of fluororubber are the products that Sakura Seal excels at the most. We provide not only general-purpose FKM materials but also various fluororubber materials with special properties, including FFKM materials. Sakura Seal's O-rings meet quality requirements considering harsh usage environments, price demands arising from the ever-changing market conditions, and short delivery time requirements.

  • Work tools
  • Water and sewerage pipe fittings
  • Railway Construction

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O-ring VMQ-70 (Type C / Silicone Rubber)

The cherry blossom seal for O-rings is molded in a variety of materials, including VMQ-70 (Type C / silicone rubber), and comes in a wide range of sizes.

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, 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. * As of now, 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.

  • Water supply facilities
  • Safety and consumables
  • Water and sewerage pipe fittings

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O-ring VMQ-50 (50° SI / silicone rubber)

The O-ring cherry seal is molded from various materials including VMQ-50 (50° SI / silicone rubber) and is available in a wide range of O-ring sizes.

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 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.

  • Water supply facilities
  • Safety and consumables
  • Water and sewerage pipe fittings

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O-ring PTFE (Teflon / polytetrafluoroethylene resin)

The O-ring cherry seal is made from various materials including PTFE (Teflon / polytetrafluoroethylene resin), and we produce O-rings in a wide range of sizes.

Made of fluororesin (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 exhibits 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, supporting the appropriate selection of O-rings in terms of both material and size. * We also accommodate shapes other than O-rings.

  • accessories
  • Safety and consumables
  • Water and sewerage pipe fittings

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O-ring FKM-90 (fluororubber)

O-ring cherry seal made of 'FKM-90 (fluoro rubber)' material.

The material is made of fluororubber (bivalent 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 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, 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

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O-ring EPDM-70 (Ethylene Propylene Rubber)

O-ring cherry seal made of 'EPDM-70 (ethylene propylene rubber)' material.

Made of ethylene propylene rubber, it excels in water resistance, chemical resistance, and weather resistance, but has poor oil resistance. Before JIS B2401:2012 defined it as EPDM-70, it was treated under public standards as types 3 of the old JIS standard or 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, 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.

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

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O-ring HNBR-70 (Hydrogenated Nitrile Rubber)

O-ring cherry seal made of 'HNBR-70 (hydrogenated nitrile rubber)' material.

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 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 addition to the 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.

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

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O-ring U-70 (urethane rubber)

O-ring cherry seal made of 'U-70 (urethane rubber)' material.

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 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 appropriate O-ring selection in terms of both material and size. * We also accommodate shapes other than O-rings.

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

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