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　　Installation guide
　　When installing a rotating seal (shaft lip), the following points must be observed:
　　, before installation, clean installation groove, for rubber seals, shaft and seal must be coated with grease or oiled and sharp edge section of excessive must chamfering or guide circle, or to cover when pressed into the sealing parts, pay attention to sealing ring don't reverse - pressing force must role in as much as possible near the sealing parts of foreign week, after installation, seals must be concentric and and axis at right angles
　　The end face of the mounting hole is usually used as a contact surface; the seal can also be fixed with a shoulder or a spacer.
　　Figure 7 indicates that a suitable installation tool or device is used to install the pressure in the rotating shaft.