O-ring JASO F404 standard (JASO number / JASO series)
Sakura Seal O-Ring JASO F404 Standard
The O-ring cherry seal molds O-rings of various sizes, including the JASO F404 standard, using a wide variety of materials.
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.
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basic information
The JASO F404 standard is one of the O-ring dimension standards established by the Japan Society of Automotive Engineers. It is utilized primarily in the Japanese automotive industry for O-ring sizes used in automobiles (both four-wheeled and two-wheeled vehicles). Additionally, some of the JASO F404 standards can be converted to the P standard according to the JIS standard (JIS B2401).
Price information
Prices may vary depending on the material and quantity, so please feel free to contact us.
Delivery Time
P1
※In principle, stock items are available for immediate delivery, but the delivery time may vary depending on the material and quantity.
Applications/Examples of results
O-rings (for motion, for cylindrical surface fixation, for flat surface fixation). Automotive parts. Packing, gaskets.
Line up（34）
| Model number | overview |
|---|---|
| NBR-70-1 (1A) | The most versatile material made of nitrile rubber, featuring oil resistance and abrasion resistance. Type A (former JIS standard = JIS B2401:2005). Hardness A70±5. Black. Temperature -30 to 100℃. |
| NBR-90 (1B) | A material made of nitrile rubber, offering oil resistance, abrasion resistance, and excellent pressure resistance. Type B (former JIS standard = JIS B2401:2005). Hardness A90±5. Black. Temperature -20 to 100℃. |
| NBR-70-2 (2A) | A material made of nitrile rubber, excelling in oil resistance and suitable for use with fuel oil. Type A (former JIS standard = JIS B2401:2005). Hardness A70±5. Black. Temperature -20 to 100℃. |
| FKM-70 (4D) | A material made of fluorine rubber (type 2), featuring excellent heat resistance, chemical resistance, and oil resistance. Type D (former JIS standard = JIS B2401:2005). Hardness A70±5. Black. Temperature -20 to 230℃. |
| FKM-90 | A material made of fluorine rubber (type 2), offering excellent heat resistance, chemical resistance, oil resistance, and pressure resistance. Hardness A90±5. Black. Temperature -10 to 230℃. |
| VMQ-70 (4C) | A material made of silicone rubber, excelling in heat resistance, cold resistance, and weather resistance. Type C (former JIS standard = JIS B2401:2005). Hardness A70±5. Red. Temperature -50 to 200℃. |
| VMQ-50 | A material made of silicone rubber, excelling in heat resistance, cold resistance, and weather resistance. Hardness A50±5. Translucent color. Temperature -50 to 200℃. |
| EPDM-70 | A material made of ethylene propylene rubber, excelling in water resistance, chemical resistance, and cold resistance. Hardness A70±5. Black. Temperature -40 to 130℃. |
| CR-70 | A material made of chloroprene rubber, featuring oil resistance and weather resistance. Hardness A70±5. Black. Temperature -30 to 100℃. |
| U-70 | A material made of urethane rubber, offering oil resistance and excellent pressure resistance. Hardness A70±5. Red. Temperature 0 to 100℃. |
| HNBR-70 | A material made of hydrogenated nitrile rubber, featuring heat resistance, weather resistance, and excellent oil and pressure resistance. Hardness A70±5. Black. Temperature -30 to 150℃. |
| PTFE | A material made of fluororesin, excelling in heat resistance, chemical resistance, and surface lubrication, but its performance as a packing is inferior to rubber. Teflon. White. |
| Fluoro Power FF | A standard material made of perfluoroelastomer, featuring extremely excellent chemical resistance and good heat resistance. Hardness A80±5. Black. Temperature 0 to 230℃. |
| Fluoro Power FFW | A white material made of perfluoroelastomer, featuring extremely excellent chemical resistance and good heat resistance. Hardness A75±5. White. Temperature 0 to 230℃. |
| Fluoro Power FFS | A heat-resistant material made of perfluoroelastomer, combining extremely excellent heat resistance and chemical resistance. Hardness A75±5. Black. Temperature 0 to 330℃. |
| Fluoro Power FFN | A heat-resistant non-filler material made of perfluoroelastomer, featuring extremely excellent heat resistance and chemical resistance. Non-carbon, non-metal. Hardness A70±5. Gray. Temperature 0 to 300℃. |
| Fluoro Power FFHW | A heat-resistant white material made of perfluoroelastomer, featuring excellent heat resistance and chemical resistance. Hardness A75±5. White. Temperature 0 to 280℃. |
| Fluoro Power FFH90 | A heat-resistant pressure-resistant material made of perfluoroelastomer, combining excellent heat resistance and chemical resistance, with excellent pressure resistance. Hardness A90±5. Black. Temperature 0 to 280℃. |
| Fluoro Power 3F | A standard material made of type 3 fluorine rubber, excelling in heat resistance and chemical resistance, suitable for use with steam and strong acids. Hardness A70±5. Black. Temperature -10 to 200℃. |
| Fluoro Power 3FW | A white material made of type 3 fluorine rubber, excelling in heat resistance and chemical resistance, suitable for use with steam and strong acids. Hardness A70±5. White. Temperature -10 to 200℃. |
| Fluoro Power 3FH | A heat-resistant material made of type 3 fluorine rubber, featuring excellent heat resistance and chemical resistance, suitable for use with steam and strong acids. Hardness A75±5. Black. Temperature 0 to 250℃. |
| Fluoro Power 3F90 | A pressure-resistant material made of type 3 fluorine rubber, excelling in heat resistance, pressure resistance, and chemical resistance, suitable for use with steam and strong acids. Hardness A90±5. Black. Temperature 0 to 200℃. |
| Fluoro Power DL | A cold-resistant material made of type 3 fluorine rubber, excelling in heat resistance, cold resistance, and chemical resistance, suitable for use with steam and strong acids. Hardness A70±5. Black. Temperature -35 to 200℃. |
| Fluoro Power DD | A conductive material made of type 3 fluorine rubber, excelling in heat resistance, cold resistance, and chemical resistance, suitable for use with steam and strong acids. Anti-static effect. Hardness A80±5. Black. Temperature -35 to 200℃. |
| Fluoro Power DEB | A standard material made of Viton ETP, featuring excellent chemical resistance, suitable for use with strong alkalis, strong acids, and polar solvents. Hardness A75±5. Black. Temperature 0 to 200℃. |
| Fluoro Power DEW | A white material made of Viton ETP, featuring excellent chemical resistance, suitable for use with strong alkalis, strong acids, and polar solvents. Hardness A70±5. White. Temperature 0 to 180℃. |
| Fluoro Power AF | A standard material made of Aflas, featuring excellent chemical resistance, particularly excellent amine resistance, and suitable for use with strong alkalis and strong acids. Radiation resistance. Hardness A70±5. Black. Temperature 0 to 200℃. |
| Fluoro Power AF90 | A pressure-resistant material made of Aflas, featuring excellent chemical resistance, particularly excellent amine resistance, and suitable for use with strong alkalis and strong acids. Radiation resistance. Hardness A90±5. Black. Temperature 0 to 200℃. |
| Fluoro Power FQ | A material made of fluorosilicone, featuring extremely excellent cold resistance and excellent oil resistance, suitable for use with fuel oil. Hardness A70±5. Blue. Temperature -70 to 200℃. |
| Fluoro Power DPR | A special material combining fluororesin and fluorine rubber, featuring excellent plasma resistance without fillers while keeping costs low. Hardness A65±5. Black. Temperature 0 to 200℃. |
| Fluoro Up D | A special material made of fluorine rubber, excelling in heat resistance, chemical resistance, low adhesion, low outgassing, and high vacuum resistance. Hardness A70±5. Black. Temperature -20 to 230℃. |
| Fluoro Up K | A special material made of fluorine rubber, excelling in heat resistance, chemical resistance, low adhesion, and low friction. Hardness A70±5. Black. Temperature 0 to 230℃. |
| Fluoro Up S | A special material made of fluorine rubber, excelling in heat resistance, chemical resistance, low adhesion, low friction, low sticking, and low outgassing. Hardness A70±5. Black. Temperature 0 to 230℃. |
| Fluoro Up V | A special material made of fluorine rubber, excelling in heat resistance, chemical resistance, low adhesion, low friction, and low sticking, with excellent low outgassing and high vacuum resistance. Hardness A75±5. Black. Temperature -20 to 250℃. |
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Company information
Sakura Seal Co., Ltd. is a seal product manufacturer that specializes in the production and sale of various sealing products, primarily O-rings, oil seals, and gaskets. We are particularly skilled in molded products made from fluororubber, and we offer a wide range of high-performance materials with special properties, including not only general-purpose FKM materials but also FFKM materials. With our deep knowledge of various sealing products, we maintain a stock of over 20,000 types, even within Tokyo, and strive to remain an organization that provides high convenience for industries and society.