| 摘要 |
The present invention provides an engine oil seal (100) comprising: a body (110), a dust lip (120), a main lip (130), and a protrusion (133). The body (110) has the shape of a container open in the rear side and has a through-hole formed on the central part thereof. The dust lip (120) protrudes from the through-hole (115) of the body (110) to the front side and is continuously formed along the periphery of the through-hole (115) toward the interior. The main lip (130) is arranged on the rear side of the dust lip (120) and is backwardly extended along the periphery of the through-hole (115) to have a tube-shape. A protrusion (133) is formed along the periphery of the inner surface of the main lip (130). Therefore, leakage of oil can be prevented without compressing the shaft (S), and an item can be prevented from being hardened due to frictional heat through the inflow of air. Moreover, even when dust is introduced and causes damage to a part of the protrusion (133), the leakage of the oil can be prevented. |
