This is usually a rubber as the main component. Because it has a duty to help the oil seals in various situations. You need to choose the right material to work with. <br>The suitable material that varies.
This is usually the main ingredient, because it requires a duty to assist in the work of the oil in various situations, which are suitable for the work condition, which is different for the appropriate materials.
This part usually has rubber as the main component. This is due to help in a variety of situations. Select materials suitable for working conditions.<br>Appropriate materials are different.<br>