The O-ring cherry seals are available in a wide variety of materials with various properties such as heat resistance, pressure resistance, and chemical resistance, and they can be molded in various sizes.
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 a wide range of performance requirements across various industries with a rich lineup of materials. In addition to general-purpose materials based on JIS standards, we offer various fluorine rubber materials with distinctive properties, including the "Fluoro Power Series," which features high-performance materials with Perfluoroelastomer (FFKM) at the top, and the "Fluoro Up Series," characterized by low adhesion, low friction, low sticking, and low outgassing, to support appropriate material selection.
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basic information
The selection of materials suitable for the operating environment of O-rings is made considering temperature conditions, pressure conditions, and the conditions of the contacting fluid. A higher price does not necessarily mean better performance, so please understand the advantages and disadvantages of each material and choose the optimal O-ring.
Price information
It varies greatly depending on the material, dimensions, and quantity.
Delivery Time
※In-stock items are available for immediate delivery.
Applications/Examples of results
Packing, gasket, molded products
Line up（34）
| Model number | overview |
|---|---|
| NBR-70-1 (1A) | The most versatile material made of nitrile rubber, with oil resistance and abrasion resistance. Type A1 (former JIS standard = JIS B2401:2005). Hardness A70±5. Black. Temperature -30 to 100℃. |
| NBR-90 (1B) | A material made of nitrile rubber, with oil resistance, abrasion resistance, and excellent pressure resistance. Type B1 (former JIS standard = JIS B2401:2005). Hardness A90±5. Black. Temperature -20 to 100℃. |
| NBR-70-2 (2A) | A material made of nitrile rubber, with excellent oil resistance, suitable for use with fuel oil. Type A2 (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), with excellent heat resistance, chemical resistance, and oil resistance. Type D4 (former JIS standard = JIS B2401:2005). Hardness A70±5. Black. Temperature -20 to 230℃. |
| FKM-90 | A material made of fluorine rubber (type 2), with 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, with excellent heat resistance, cold resistance, and weather resistance. Type C4 (former JIS standard = JIS B2401:2005). Hardness A70±5. Red. Temperature -50 to 200℃. |
| VMQ-50 | A material made of silicone rubber, with excellent 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, with excellent water resistance, chemical resistance, and cold resistance. Hardness A70±5. Black. Temperature -40 to 130℃. |
| CR-70 | A material made of chloroprene rubber, with oil resistance and weather resistance. Hardness A70±5. Black. Temperature -30 to 100℃. |
| U-70 | A material made of urethane rubber, with oil resistance and excellent pressure resistance. Hardness A70±5. Red. Temperature 0 to 100℃. |
| HNBR-70 | A material made of hydrogenated nitrile rubber, with heat resistance, weather resistance, and excellent oil and pressure resistance. Hardness A70±5. Black. Temperature -30 to 150℃. |
| PTFE | A material made of fluoropolymer, with excellent heat resistance, chemical resistance, and surface lubricity, but inferior performance as a gasket compared to rubber. Teflon. White. |
| Fluoro Power FF | A standard material made of perfluoroelastomer, with 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, with 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 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, with 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, with 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, with excellent 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, with excellent 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, with 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, with excellent 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, with excellent 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, with excellent 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, with 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, with 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, with excellent chemical resistance, particularly resistant to amines, 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, with excellent chemical resistance, particularly resistant to amines, 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, with 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 fluoropolymer and fluorine rubber, with excellent plasma resistance while keeping costs low. Non-filler. Hardness A65±5. Black. Temperature 0 to 200℃. |
| Fluoro Up D | A special material made of fluorine rubber, with heat resistance, chemical resistance, low adhesion, low outgassing, and excellent high vacuum resistance. Hardness A70±5. Black. Temperature -20 to 230℃. |
| Fluoro Up K | A special material made of fluorine rubber, with 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, with 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, with heat resistance, chemical resistance, low adhesion, low friction, and low sticking, as well as 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.