VK (VRIESKAP-COVERSEAL)

product

VK

Cover seal with a grooved elastomer outer coating and a partly-coated metal stiffening ring.

 Description
Product group: VK
Design:
01 = elastomer outer surface
02 = semi-shoulder design
03 = elastomerer outer surface grooved
Seal material: NBR 70, NBR 70
Colour: black
Seal material: FKM 80
Colour: brown
Stiffening ring: non-alloy steel according to DIN EN 10139


Areas of application
Cover seals serve the secure sealing of openings for shaft or axle apertures. They are often used in transmissions and for bearing blocks.

Special models
Any special model required can be manufactured according to the customer’s specifications or developed by our engineering department according to the customer’s requirements and made ready for production
 
Function
The grooved elastomer outer coating enables easier installation because less press-in force is required. Through grooving permanent skew of the cover seal is avoided. Provides good applicability in housings with high thermal expansion, as the grooved, rubber-encased outer surface is made with a higher press-fit allowance. :

Media
NBR: Good chemical resistance to many mineral oils and lubricants. Medium ageing resistance. 

Operational application limits
Pressure (MPa/bar): 0,05/0,5
With higher pressures the cover seal should be secured by e.g. a circlip.
NBR: Temperature -30°C to +100°C  

Installation
It is important to ensure correct installation. It is preferable to use a hydraulic or mechanical press device to press the sealing cap into the housing bore-hole. This grips the sealing cap on a broad area of its outer side so that the pressure is applied as closely as possible to the outside diameter. Please note that the press device should be held at its highest setting for a while. This will reduce the recoil or slanted positioning of the sealing cap to a minimum. 

Storage
Generally speaking, elastomers are suitable for storage. They remain almost unchanged in their properties for years, provided that certain minimum requirements regarding storage conditions are observed. These are described in DIN 7716 and ISO 2230.

The seals must be stored stress-free, i.e. without tension, pressure or other forms of deformation.

Remarks
The nominal widths mentioned on the following pages represent the standard dimensions.

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# Vota code Name Application Material Pressure
(bar)
Temperature °C Sliding Speed (m/s)
oliekeerring/vk VK VK (VRIESKAP-COVERSEAL) STATIC NBR-STAAL 0.5 -30°C +100°C
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