- 4. Look for a visible spark between the tester and the engine block or metal surface. If a spark is present, it indicates that the wire is in good condition.
- If you're in need of a high-quality valve cover gasket for your vehicle, look no further than [Supplier Name]. With our commitment to quality, customer service, and convenience, we're confident that we can meet all of your automotive needs. Contact us today to learn more about our extensive selection of valve cover gaskets and other automotive parts.
Click here for Corteco's catalogue
The mechanical seal is used in a pump, mixer and other mechanical engineering scenarios to contain the fluid within a vessel where a shaft rotates through a stationary (or rotating) housing.
- Cylinder head gaskets are a vital component of a vehicle's engine, playing a crucial role in maintaining the integrity of the combustion chamber. These gaskets are designed to seal the gap between the engine block and cylinder head, preventing any fluids or gases from escaping or leaking into the combustion chamber.
Figure 3: Sealing function of main lip radial load
* KOYO is a registered trademark of JTEKT.
Thoroughly clean the area around the oil seal and check how it is fitted. If you cannot see the outer end of the seal, remove the timing-belt cover or chain cover (not the belt or chain) and possibly the water pump (See Replacing a water pump ) to reveal it. On an engine with a belt-driven overhead camshaft , remove the belt and its drive sprocket .
0.4 to 1.6 μmRa,
1.6 to 6.3 μmRz
2. For rubber O.D. wall type:
1.6 to 3.2 μmRa,
6.3 to 12.5 μmRz
(Firmly affixes the oil seal and prevents leakage through the seal O.D.)
Oil seals come cataloged as metric oil seals or imperial sized oil seals. The seals can also be custom-made to match the bearings in new types of machinery. They are installed in practically every type of machine including vehicles, protecting all kinds of precision, precisely-fitted ball bearings, sleeve bearings, and roller bearings.
MH: O.D. wall is a rubber material
HM: O.D. wall is a metal case
MH(S)H: O.D. wall is metal with a reinforced inner metal case

Ethylen-Propylen-Dien-Kautschuk (EPDM)
The ignition spark plug is essentially a small device that is screwed into the cylinder head of the engine. It consists of a central electrode, an insulator, and a ground electrode. When the engine's piston compresses the air-fuel mixture in the cylinder, the spark plug creates a spark that ignites the mixture, causing combustion to occur.
In conclusion, U-shaped silicone gaskets, white rubber gasket sheets, and waterproof rubber gaskets offer versatile and effective sealing solutions for a wide range of industrial and commercial applications. Understanding the advantages and applications of these gaskets is crucial for selecting the appropriate sealing components to ensure protection, reliability, and longevity in various systems and equipment.
As shown in Figure 1, sealing devices come in two types: contact and non-contact.
Oil seals are among the major contact type sealing devices.
The 38x52x7 oil seal is a popular size that is used in a variety of applications
. It is commonly used in automotive engines, industrial gearboxes, and hydraulic systems. The seal is designed to withstand the high speeds and temperatures that are common in these types of machinery, and it provides reliable protection against oil leakage.38x52x7 oil seal

Click here to get in touch with us.