Pressure equalisation elements

Meaning & Function

Fluctuations in temperature triggered by external influences (such as changing weather conditions) can lead to condensation developing within the enclosure. To prevent this from happening, we recommend using pressure equalisation elements.

Our pressure equalisation elements prevent the pressure difference between the inside of the enclosure and the environment, which is responsible for the condensation in the enclosure. The elements made of robust polyamide or stainless steel are fitted with a special air permeable but water repellent membrane in order to maintain the enclosure’s IP protection. You will find solutions in different sizes, materials or colours in our extensive product range.


How many pressure equalisation elements do you need for your application?

The question can be answered quite simply – using our pressure equalisation calculator. Take a look here.

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To our products


Material:Nickel Plated Brass
Sealing:VMQ (Silikon)
O-ring:VMQ (Silikon)
Temperatures:from -60°C to +200°C


Something missing? Then please contact us!

Data Sheets / Installation instructions

Something missing? Then please contact us!

Material: Nickel Plated Brass
Article numberSize ETClamping rangeSWSW1Connecting thread lengthHPU
Standard Sealing, VMQ (Silikon)
HU1751120050M 12 x
HU1751120051M 12 x
HU1751160050M 16 x 1.54.0011.0019207.024.5025
HU1751160051M 16 x 1.57.0011.0019207.024.5025
HU1751200050M 20 x 1.57.0014.0022246.027.0025
HU1751200051M 20 x 1.510.0014.0022246.027.0025
HU1751250050M 25 x 1.511.0018.0027306.029.0025
HU1751250051M 25 x 1.514.5018.0027307.029.0025
HU1751320050M 32 x 1.516.0025.0036408.034.0010
HU1751320051M 32 x 1.520.5025.0036408.034.0010
HU1751400050M 40 x 1.521.0032.0046508.040.005
HU1751400051M 40 x 1.526.5032.0046508.040.005
HU1751500050M 50 x 1.531.0042.0057579.048.005
HU1751500051M 50 x 1.535.0042.0057579.048.005
HU1751630050M 63 x 1.541.0054.0065680.047.501
HU1751630051M 63 x 1.546.5054.0065680.047.501
Unless otherwise stated, all data in millimeters or pieces (quantity)