- When it comes to the type of plug, there are two main categories conventional spark plugs and performance spark plugs. Conventional spark plugs are designed for everyday driving and are relatively inexpensive, while performance spark plugs are designed for high-performance vehicles and can be much more expensive.
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- In conclusion, cylinder head gaskets are a critical component of a vehicle's engine, playing a key role in maintaining proper compression and regulating engine temperature. Regular inspection and maintenance of these gaskets are essential to ensure the continued performance and longevity of the engine. By taking care of this important component, vehicle owners can avoid potentially costly repairs and keep their engines running smoothly for years to come.
Based on the application of the oil seal, the outer skin layer tends to differ. Here are some types of the materials used for the outer skin of the oil seal.
Synthetic Rubber Oil Seals - Styrene Butadiene Rubber oil seals, or just SBR oil seals, offer strong resistance to abrasions and lesions, making them an ideal seal for fast-moving machinery. With the ability to withstand extreme temperatures with its heat-aging qualities, they can be used in outdoor components. They are also seen as more cost-effective oil seals than natural rubber.
Jiri George Drobny, in Fluoroelastomers Handbook (Second Edition), 2016
Cassette Seals
Choosing the wrong materials for an oil seal may result in premature wear, lip hardening, cracks, swelling, and subsequent expensive damage to the machinery in which the seal is used. It is therefore vital to gather all relevant data and consult with experts before purchasing to match the right type of oil seal with your application.
Without spring Rubber O.D. wall Metal O.D. wall
Case study 2: Silicone oil leakage
PTFE Oil Seals - A relatively new and exciting oil seal, the use of polytetrafluoroethylene means that they can withstand dry or unlubricated operations. With a massive thermal range of -130ºC to +200ºC and a strong resistance to chemicals, they are considered to be the future of rotary shaft seals.
You have to consider the speed at which the shaft will be moving, the housing bore, and the runout. These are important to make sure that you choose an oil seal that will not be exposed to unconducive abrasions.
ERIKS type M (type B according to the DIN standard) has a single metal casing and rubber sealing lip. Since the casing is made of metal, it must be fitted in a well-finished, undamaged groove. Large volumes of oil seals with metal casings are often cheaper, which is why they are often used as original equipment in machines. However, if an oil seal has to be replaced, types with a rubber exterior (type R or RST) are easier to fit. Type MST is similar to M and commonly used. The difference is the dust lip in the MST oil seal that prevents dust and dirt reaching the sealing lip, and extends its service life in dusty environments.