Metal-cased oil seals are used when installed to a housing bore made of the same material. In the following chapter we will give an overview over the most important oil seals and their applications and specifications. The most commonly used oil seals in most applications are rubber cased or metal cased oil seals.
It maintains the radial force exerted by the sealing lip around the shaft surface.Įxplore the full range of oil seals in the ERIKS webshop and find the right product for your application. The medium to be sealed will dissipateĪ garter spring is a coiled steel spring that is connected at each end to create a circular shape. If oil seals with fixed dust lips are being used, the spaceīetween the sealing lip and the dust lip may also be filledĮntirely with grease. Tip for greasing oil seals with dust lips: An oilseal with dust lip may also be called a double lip oilseal. When present, the dust lip (which can be seen on the left oil seal in the picture) works to protect the sealing lip while blocking dust and dirt from entering the system, ensuring longer seal lifetime.ĭust lips are located on the inner diameter of the oil seal. The oil seal consists of a metal ring as the inner skeleton which provides the structural stability to the oil seal. The spring on the lip of the oil seal provides support to the lip and prevents the lubricant from leaking outside and also prevents contaminants from entering. The outer part is made of rubber or metal - based on the requirement and the application of the oil seal. The standard oil seal consists of a metal ring as the inner skeleton which provides the structural stability to the oil seal. In the following table you will find the most important norm designs of oil seals according to the DIN standard and their corresponding ERIKS oil seal product. DIN 3761 defines standards for rotary shaft lip type seals for automobiles. Or equipment with a low differential pressure, that has rotating shafts.
The DIN 3760 standard specifies dimensions and requirements for materials, marking, use and installation of rotary shaft lip seals used for retaining fluid or grease in unpressurized equipment, The right material and type of oil seal is determined by the application and the medium that will be used with the oil seal. There are different types of oil seals that fit a different application and surroundings and are made out of different materials. Oil seals are rotary shaft seals that close a gap between stationary and moving components and prevent lubricant to escape and thus stop contamination through the clearance.
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