"Sample available" explains the use of backup rings.
The hardness of O-rings comes in type A durometer hardness Hs70 and Hs90, with Hs90 being specified for general high-pressure use. However, Hs70 can also be used for the same high-pressure applications with the use of backup rings. At high pressure, there can be protrusion from the gap in the shaft. This protrusion is determined by the hardness of the O-ring, the gap between components, and the pressure. Even in low-pressure situations where protrusion is not an issue, it helps prevent accidents such as fraying and twisting damage, which account for the majority of O-ring failures, thus extending the lifespan of the O-ring. 【Product Naming (Example)】 The naming of backup rings consists of the standard number or standard name, type symbol, and the O-ring call number. ■ Spiral JISB2401-4 (Standard Number), T1 (Type Symbol), P20 (Ring Call Number) ■ Bias Cut JISB2401-4 (Standard Number), T2 (Type Symbol), P20 (Ring Call Number) ■ Bias Cut JISB2401-4 (Standard Number), T3 (Type Symbol), P20 (Ring Call Number) *Samples are available upon request. If you would like a sample, please apply through the [Contact Us] section.
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【Other Handling Precautions】 When using in each groove, even if pressure is applied from only one side, unexpected pressure may occur, and considering the lubricating effect of the backup ring, it is desirable to install two backup rings on both sides of the O-ring. However, if there are space constraints that make it difficult to install two backup rings, one backup ring should be installed on the low-pressure side. When installing the spiral, it is important to turn it in the direction that wraps around towards the deeper side of the groove during assembly. The operating temperature for polytetrafluoroethylene resin rings is -100 to +260°C, and they can be used in most operating fluids, including general mineral oil-based hydraulic fluids, water-based hydraulic fluids, and synthetic hydraulic fluids. *Samples are available upon request. If you would like a sample, please apply through the [Contact Us] section. *Product documentation can be viewed from the [Download] section.
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Masuoka Tokyo Co., Ltd. provides high-quality sealing materials centered around O-rings, industrial rubber products, and resin products in small lots with short delivery times. We also offer high-performance materials to meet our customers' needs. With our experience and know-how, we will create what you desire. Please feel free to contact us.