Characteristic: The oil seal chainsaw crankshaft is made of high quality rubber material, with good sealing function and long service life. It can adapt to machine vibration and eccentricity of spindle. Suitable for MS180 MS170 170 180 chainsaw. Oil seal has high cost performance. Good heat resistance and wear resistance, suitable for all kinds of lubricating oil, grease, oil and mixed gas. The oil seal is simple in structure and easy to install. Please that the shaft or cavity is "damaged" before installation. When installing the oil seal, you can apply some oil to the diary and gently press the oil seal into it with appropriate special tools to prevent the oil seal from being deformed. Describe Name: chainsaw oil seal set Material: rubber Quantity: 10pcs Size: 15 x 25 x 5mm Color: Blue Package Contents: 10 x Chainsaw oil seal Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.