Another benefit of using a bolt wedge is its strength and durability. The tapered shape of the bolt allows for a tight fit, which prevents the connected objects from shifting or coming loose
An oil seal consists of:
- Our commitment to quality starts with sourcing only the best materials for our valve cover gaskets. We use materials that are resistant to heat, oil, and other harsh conditions commonly found in engines. This ensures that our gaskets can withstand the rigors of daily use and provide long-lasting performance.

Spark Plug Automotive: Enhancing Performance and Reliability
Another important factor to consider when choosing spark plugs for your MK7 GTI is the electrode material. The electrode material can vary between spark plugs and can have an impact on the performance of your engine. Copper, platinum, and iridium are common electrode materials used in spark plugs. Iridium spark plugs are often preferred for performance cars like the MK7 GTI due to their durability and ability to maintain a stable spark.
VMQ (silicone)

The most important function of an oil seal is to protect all types of sleeves, roller bearings, and balls located in the rotary shafts. These seals also prevent two fluids from mixing, such as water and oil.
b) The area where the oil seal is seated is to be plunge ground in order to prevent wear grooves that normally tend to wear out the lip of the oil seal at a faster rate.


Car engine oil seals are essential components that prevent oil leaks and maintain proper lubrication within the engine. They play a crucial role in preserving the integrity and efficiency of the engine, contributing to its overall performance and longevity. High-quality engine oil seals are designed to withstand the demanding conditions of automotive operation, ensuring reliable sealing solutions for critical engine components.

Oil seals are installed beside the bearing while the flexible lip is pressed against the rotating shaft. The casing pressing into the housing holds the seal in place. The sealing lip is essentially lubricated to minimize the risk of overheating due to the generated friction.