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 according to the JASO F404 standard and other specifications using a wide variety of materials.
The JASO F404 standard, established by the Society of Automotive Engineers, is a widely used size series for automotive applications, including for dynamic, cylindrical surface fixed, and flat surface fixed seals. 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, 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, in addition to general-purpose materials based on JIS standards.
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basic information
The JASO F404 standard is one of the O-ring dimension standards established by the Japan Automobile Technicians Association. 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 JIS standards (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 can be used 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 lubricity, 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, and also excelling in 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, and can also be used 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, and can also be used 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, and can also be used 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, and can also be used 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, and can also be used 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, and can also be used 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, making it suitable for 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, making it suitable for 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 can also be used 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 can also be used 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 can also be used with fuel oil due to its excellent oil resistance. Hardness A70±5. Blue. Temperature -70 to 200℃. |
| Fluoro Power DPR | A special material combining fluororesin and fluorine rubber, offering excellent plasma resistance 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, while also excelling in 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 O-rings, oil seals, and various types of gaskets. We particularly excel 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 seal 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.