Introduction of automotive crankcase seals
Automotive crankcase seals are one of the key sealing components of the engine, and their main function is to prevent oil leakage and external impurities from entering the crankcase. However, crankcase seals can fail for a variety of reasons, resulting in oil leaks and reduced engine performance.
The role of automotive crankcase seals
Prevent oil leakage
The crankcase seal is located between the engine crankcase and the oil pan, effectively preventing oil from leaking out of the crankcase and keeping the engine properly lubricated and cooled.
Prevent impurities from entering
Automotive crankcase seals also play a role in preventing external impurities such as dust, sediment, etc. from entering the crankcase, keeping the inside of the crankcase clean and reducing wear and damage to engine parts.
| Product name | Automotive crankcase seals |
| Material | Rubber/ Silicone/ Metallic |
| Hardness (Shore A) | 20 to 90 |
| Applicable temperature °C | -60 to 300 |
| Color | Black, orange, blue, yellow, green, custom |
| Size | Standard/ Custom |
| Advantage | Wear resistance, high pressure resistance, high temperature resistance, corrosion resistance |
| Application | Automotive crankcase |
Causes of failure of automotive crankcase seals
Aging of seals
As the use of the car increases, the automotive crankcase seal will be subject to high temperature, high pressure and oil erosion, resulting in the aging and hardening of the rubber seal, losing its original elasticity and sealing performance.
The sealing surface is worn
The sealing surface of the crankcase seal is in contact with the crankcase and the oil pan, and long-term friction and vibration may cause wear and unevenness of the sealing surface, affecting the sealing effect.
Improper installation
When replacing or repairing crankcase seals, incorrect installation operations may result in damage to the seals or incomplete seals, causing oil leakage.
Over-tightening
Over-tightening of crankcase cover bolts or sump bolts may cause deformation or damage to the crankcase seals, causing leakage.
Ways to solve the failure of automotive crankcase seals
Seal replacement
For aging, hardened or damaged seals, the most effective solution is to replace them with new seals. When replacing seals, select high-quality seals that meet the specifications and ensure proper installation to ensure sealing performance.
Sealing surface repair
For worn or uneven sealing surfaces, repair or grinding can be carried out to restore their flatness and sealing performance. When carrying out the repair, the manufacturer’s recommendations and technical expertise should be followed.
Regular inspection and maintenance
Regularly check the condition of the automotive crankcase seals, especially when changing the oil, the seals should be carefully checked for signs of leakage. Identifying and resolving potential problems in a timely manner can avoid further deterioration of failures.
Pay attention to installation and fastening
When installing or replacing the crankcase cover and oil pan, it should be done in accordance with the manufacturer’s recommendations and specifications. Avoid overtightening the bolts to avoid damaging the seal or causing an incomplete seal.
Measures to prevent failure of automotive crankcase seals
Change the oil and filter regularly
Regular oil and filter changes can reduce impurities and contaminants in the oil, reducing erosion and damage to crankcase seals.
Avoid excessive load
Avoid prolonged high-speed driving, overloading or sharp acceleration to reduce excessive load and vibration of the engine and reduce the wear of seals.
Keep the proper cooling system running
Overheating of the engine can cause seals to age and deform, so ensure proper operation and maintenance of the engine cooling system.
Conclusion
Automotive crankcase seals play a key role in the normal operation of the engine, preventing oil leakage and external impurities from entering the crankcase. Aging seals, wear of sealing faces, improper installation and over-tightening are common causes of failure.
In order to solve the failure, methods such as replacing seals, repairing sealing surfaces, regular inspection and maintenance, and paying attention to installation and fastening can be taken. In addition, failure prevention measures include regular oil and filter changes, avoiding overload and keeping proper cooling systems running.
Regular inspection and maintenance of the condition of automotive crankcase seals and following the manufacturer’s recommendations and specifications can help extend the life of the seals and ensure the proper operation and reliability of the engine.
