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SKF sealing washers are thin discs mounted at the side of a bearing to close the space between shaft and housing. They do not rub like a shaft seal: they leave a very small gap that slows the escape of grease and the entry of coarse dirt. They are a simple, compact protection for grease-lubricated supports where there is no room for a more elaborate seal.
See all SKF seals references →SKF guide →Sealing washers from all brands →SKF radial shaft seals →SKF V-ring seals →
The designation starts with Z and a number that refers to the size of the bearing it goes with: Z 007 and Z 008 are two consecutive sizes. It is not a direct dimension in millimetres, so the washer is chosen from the bearing designation and not by measuring the shaft.
The letter that may follow the number distinguishes the execution. Z 008 F and Z 010 F are the variant that adds a felt element to the disc, to improve the closure. The version without a letter and the version with F of the same number share the mounting position and are not the same reference.
The washer is clamped against one of the bearing rings and forms a narrow gap against the other. Depending on the arrangement, it is held by the inner ring, with the nut or the shaft shoulder, or by the outer ring, with the housing cover. It is common to fit more than one, facing each other, to form a small labyrinth.
Since there is no contact, it adds no friction and does not wear, but it does not retain oil or withstand jets of water either. If the environment has liquids or very fine dust, a contact seal is needed as well. When dismantling, check that the washers are not distorted: a bent washer rubs and raises the temperature.
Send us the washer designation and the quantity. If you do not have it, give us the designation of the bearing it is mounted next to and tell us how many washers there were and on which side. Let us know whether the removed ones had felt. That identifies the size and the execution. If the support is losing grease, describe the environment: another type of seal may be advisable.
No. It refers to the bearing size; choose it by the bearing designation.
It does not retain oil. It is for grease and coarse dirt, or as a complement to a seal.
The variant with a felt element. It is another reference of the same size.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
SKF Z series sealing washers are axial sealing components mounted in rotating assemblies to retain lubricant and block the entry of contaminants. They are used in gearboxes, pumps, electric motors and transmission equipment, where they protect bearings and wear surfaces. MR Accesorios Industriales distributes this line as a brand, with technical advice to choose the correct size according to the housing and the shaft.
SKF Z F series sealing washers are axial sealing elements mounted on shafts or in housings to retain lubricant and block the ingress of contaminants. They are made of elastomers resistant to oils and greases, and are used in assemblies where axial space is limited. MR Accesorios Industriales carries this line as a brand.
Just the manufacturer part number is enough: we will quote it and provide dimensions and equivalents via WhatsApp or email.
