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Maintenance and Replacement of Oil Seals:

PTFE is special in that a pre-tensioned spring is not required. This is because the material returns to its original shape when heated, also known as the shape-memory polymers (SMPs) effect. These oil seals are also supplied as integrated parts, where it only needs to be installed as one component.

In general, oil seals should be selected in the order of priority indicated in Table 1.