Composite oil seal having electric corrosion prevention function and method of manufacturing ground path thereof

A composite oil seal having an electric corrosion prevention function, the composite oil seal comprising:

• a seal main body configured to seal an interior of a motor housing in a state of being mounted to a shaft in the motor housing;
• and
• a ground path mounted to the seal main body, the ground path being configured to electrically connect the shaft to the motor housing to allow current induced in the shaft to flow to the motor housing,
• wherein the ground path comprises a conductive layer in which a conductive thread having a yarn shape and made of a conductive material is patterned,
• wherein the conductive layer comprises at least two conductive layers stacked one above another, and
• wherein the at least two conductive layers comprise:
• a first conductive layer formed in such a manner that a first conductive thread is wound in a circumferential direction about a center of the seal main body;
• and
• a second conductive layer formed in such a manner that a second conductive thread extends in a radial direction about the center of the seal main body so as to intersect the first conductive thread, the second conductive layer being in contact with the first conductive layer.