Encapsulated O rings/sealing O rings

Rubber O-rings can generally be classified into standard and customized, can also be classified by the quality and physical properties of the product.

According to the standard points are commonly used: successful bid, American standard, British standard, French standard and Japanese standard. Non-standard Generally, some manufacturers and company designers do not know the various standards of O-rings, and design the products to use different specification O-rings. We advise users to use metric standard O-rings as much as possible when designing products. Such O-rings are readily available on the market and are relatively inexpensive in terms of price. Non-standard O-rings generally need to be customized rubber o rings , they will be longer in time, and they will also increase in price due to custom products.

According to the quality and physical properties of the points generally refers to the O-rings used in the production of raw materials, what materials used to determine to a large extent the produced O-ring has what kind of physical properties. For example, the most commonly used NBR O-rings are more suitable for use in petroleum-based hydraulic fluids, glycol-based hydraulic fluids, diester-based lubricants, gasoline, water, silicone greases, and silicone oils. . Not suitable for use in polar solvents such as ketones, ozone, nitrohydrocarbons, MEK, and chloroform. The operating temperature range is generally -40~120 °C.

In addition to the above, O-ring seals are also classified by "hardness". Hardness can be differentiated between O-rings of the same quality and physical properties. The hardness range is generally 40 - 90 degrees, 40 - 60 degrees O-rings are generally used in low pressure, and need a high degree of sealing. 80-90 degree O-rings are generally used in high pressure environments. Under normal circumstances are generally used 70-degree O-rings.

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