A shaft’s surface finishing will determine how effective the sealing will be. The spiral lead and the direction of the finish tool marks have an impact on the sealing effectiveness. Therefore, it’s imperative to ensure that the shaft surface finishing is maintained.
Double metal cased
2. Metal Case


Some gaskets are in two or three pieces dove-tailed together. Make sure the pieces join up properly.
Helix Seal
VMQ (silicone)
Most oil seals consist of some basic elements that configure their structure, such as the sealing element, the metal case, and the spring:



Spark Plug Automotive: Enhancing Performance and Reliability
Choosing Quality Industrial Oil Seals
ISO 6194-1 1)
Silicone and rubber gaskets offer numerous advantages, including resistance to temperature extremes, chemicals, and environmental factors. Their flexibility and resilience allow for effective sealing in dynamic and challenging conditions. Additionally, these gaskets provide vibration dampening, noise reduction, and electrical insulation, making them valuable components in a wide range of industrial and commercial applications.
EPDM oil seals are less common. They are used in solvent, hot water and steam applications, EPDM resists low temperatures down to -50 °C and UV radiation well. Some types of EPDM are also suitable for higher temperatures up to +150 °C. EPDM oil seals are usually available upon request.