
1) Oil seals for cars
Polyacrylate
When replacing spark plugs, it is important to follow the manufacturer's recommendations for the correct type and gap setting. Using the wrong spark plugs can lead to engine misfires and poor performance. Additionally, it is essential to properly torque the spark plugs to prevent damage to the cylinder head.
Remove most of the fixings, then support the sump with one hand while you take out the last few.


The dimensions of the 25x47x7 oil seal refer to its inner diameter, outer diameter, and thickness, respectively. These measurements are important in ensuring a proper fit for the seal in the machine or engine it is intended for. By providing a secure seal between moving parts, the oil seal helps to maintain proper lubrication in the machine and prevent the loss of oil.
Proper techniques and diligence during oil seal installation will result in what seems like an unremarkable situation – a component holding its lubrication. When something you’ve installed works effectively and quietly, you know you’ve done it right.
The proper functioning of seal oil pan, oil seal turbo, and oil gasket seal is crucial for the performance and longevity of the engine. High-quality seals are essential to prevent oil leaks, maintain proper lubrication, and protect the engine components from wear and damage. When selecting these seals, it is important to prioritize quality, durability, and compatibility with specific engine models to ensure optimal performance and reliability.
Oil seals are widely used as sealing devices for machines.
JTEKT's oil seals are described in our catalog, Oil Seals & O-Rings.
However, the catalog uses a large number of technical terms and is very long, so many people seem to have trouble handling it.
Therefore, this series of columns will summarize the following in order:
• The structure, functions, and types of oil seals
• How to select the right oil seal
• Handling of seals, and causes and countermeasures for oil seal failure

For a more detailed discussion of seal types and type codes, please see the following:
What are Oil Seals – A guide to Oil and Rotary Shaft Seals