The material from which a timing belt is made is one of the most critical aspects to consider. Common materials include rubber, polyurethane, and reinforced materials that include fiberglass or aramid. Rubber belts are widely used due to their good flexibility and durability. Polyurethane belts, while typically more expensive, offer superior noise reduction and wear resistance. The selection of material should align with the application's operating temperature, load conditions, and environmental factors.
- Valve cover gaskets are typically made from a variety of materials, including rubber, silicone, and fiber reinforced materials
valve cover gasket cover. The choice of material depends on the specific requirements of the engine and the operating conditions it will encounter. For example, engines that operate at high temperatures may require a gasket made from a heat-resistant material, while those subjected to extreme pressure may benefit from a gasket with enhanced strength and durability.
Figure 9: Housing-bore eccentricity
- The front valve cover gasket is typically made of rubber or silicone material that is designed to withstand the heat and pressure of the engine. Over time, however, the gasket can wear out, become brittle, or develop cracks, leading to oil leaks and potential damage to the engine.
What are Oil Seals and how do they work?
- Innovations in material science have led to the development of advanced gasket materials, enhancing their durability and sealing capabilities. These advancements, coupled with precision manufacturing techniques, have significantly reduced the likelihood of gasket failure, contributing to the overall reliability of modern engines.

front hub oil seal. It is important to use the correct seal for your vehicle make and model to ensure a proper fit and seal.
1. What are oil seals?
Oil seals are also dirt, lip, shaft, and grease seals. They’re simple devices installed in rotary shaft equipment to minimize the risk of lubricant leakage and prevent other foreign substances such as water, dirt, and dust from entering.


The function of the skeleton oil seal is generally to isolate the parts that need to be lubricated in the transmission parts from the output parts, so as not to allow the leakage of lubricating oil. It is usually used for rotating shafts and is a kind of rotating shaft lip seal. The skeleton is like the steel bars in the concrete member, which acts as a reinforcement and enables the oil seal to maintain its shape and tension. Internal and external exposed skeleton oil seal. The skeleton oil seal is made of high-quality nitrile rubber and steel plate, with stable quality and long service life.
Carefully lower the sump from the crankcase.
Oil seals are used in a great many machines.
The group of oil seals used in dynamic applications include radial shaft seals that seal a rotating shaft around its circumference. They are also known as lip seals, but in this blog we will use the term oil seals.
Figure 2: Typically shaped oil seal and component nomenclature
VMQ, also known as silicone, is also used for oil seals, but this is less common because the mechanical strength of VMQ is low and this material has poor wear-resistance This makes it less suitable for dynamic applications, but it can withstand fairly low and high temperatures from -60 °C to 200 °C. Many types of VMQ are also suitable for contact with pharmaceutical and food products, so VMQ is an option worth considering. VMQ oil seals are usually available on request.