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.

ERIKS type R (type A according to the DIN standard) is identical in shape to type M, but has a rubber outer case with metal reinforcement on the inside. The rubber creates a good seal in the housing, even if the housing has suffered minor damage or is not in its best condition for other reasons. The RST version has a dust lip. These types are often chosen to replace a type with a metal outer case because they are easier to install and can cope with minor damage to the groove, such as scratches.

• Machining of lip surface (stable oil drip under pressure)

In these instances, Viton can be the perfect sealing material for methanol/ethanol-blended gasoline. 

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.

Rubber valve cover gaskets are crucial components in automotive engines, serving to create a secure seal between the valve cover and the cylinder head. These gaskets prevent oil leaks and contaminants from entering the engine, ensuring proper lubrication and protection of critical components. High-quality rubber valve cover gaskets are essential for maintaining the integrity and performance of the engine, contributing to optimal engine operation and reliability.

An ignition spark plug is a crucial component in the internal combustion engine of a vehicle. It plays a key role in starting the engine and ensuring it runs smoothly. Without a functioning spark plug, the engine would not be able to ignite the air-fuel mixture, resulting in the vehicle being unable to start.

All are fitted with a spring to preload the sealing lip. All these types are for non-pressurised or low-pressure applications up to 0.5 bar for diameters of a limited size. For diameter of 500 mm or more, the maximum pressure is 0.1 bar. For higher pressures, special types or PTFE lip seals can be used.