O rings are used in hydraulic cylinder sealing due to their effect need shape rectangular section rings are not suited for reciprocating motion and are only in static application; thus secular shaped seal are more preferable for this; we use o type for both static and dynamic seals.
Material selection
- leather
Reasons to select
- Locally available
- Low cost
- Long life
If Di is inner diameter of the sealed cylinder then the recommended diameter Dsi is:
Recommended shape of the groove for sealing
The following is least of the seal used in hydraulic system of variable height vehicle design analysis.
Where, ts = cross sectional diameter of the seal and can be found as follows
- Clearance
- E modules of elasticity
- Ts sealing thickness
Now consider the recommended value of the sealing given above
In a similar way we can select ds = 2.5mm for this sealing, thus
Seal in release valve
Other seals are also recommended for the manufacturer that each cylinder is perfectly sealed so that energy is saved by reducing the leakage of oil through the clearance.
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