Freudenberg Sealing Technologies
20-close First-Hand News?

Obtain news and background information about sealing technology, get in touch with innovative products – subscribe to the free e-mail newsletter.


The DIAvent® Lineup – Versatile Pressure Elements for Nearly All Applications

Solutions Range from Combined Pressure Equalization and Emergency Degassing to Operation in an Oily Environment

The transition towards e-mobility brings new challenges to vehicle design in respect to pressure equalization. Hermetically sealed housing of lithium-ion batteries for vehicles must be equipped with special pressure equalization devices, as an example.

The DIAvent® product portfolio offers a spectrum of solutions including bidirectional pressure equalization, emergency degassing during a worst-case scenario – the thermal runaway of a cell – to the two-way ventilation of an oily environment. Choose the DIAvent® advantage by completing the form below.

DIAvent Light

Benefits of DIAvent® Light at a Glance:

  • extremely high gas permeation
  • unobtrusive packaging size
  • quick and easy assembly
DIAvent HighFlow

Benefits of DIAvent® Highflow at a Glance:

  • versatile functions in a single component
  • resealing increases safety after emergency degassing
  • more robust than conventional solutions made of porous PTFE film
  • Torx wrench installation

DIAvent® – the Safe and Reliable Solution

The DIAvent® & DIAvent® Highflow pressure equalization elements are not only extremely robust against mechanical stress, but also immediately closes the diaphragm that is opened in the event of emergency degassing. One the one hand, environmental pollution is prevented. On the other hand, it increases safety for anyone in the immediate vicinity of the vehicle – especially during the transportation of the damaged and fire dormant battery system.

Please enter your email address and password.

Email address*


Password forgotten? Click here to reset.

* mandatory fields

You've logged in successfully.

Register and get instant access to exclusive content.

Please fill in all fields

First Name*

Last Name*

Email address*

Company / Organization*


Please repeat your password*

* mandatory fields

Thank you. Your subscription was successful.

We have sent you an e-mail. Please click on the included activation link to complete the registration.

Click here to continue to login.

Have you forgotten your password?

Please enter your email address to reset it.

Email address*

* mandatory fields

Your password has been successfully reset.

Click here to continue to login.
Big city with skyscrapers

Join Us!

Experience Freudenberg Sealing Technologies, its products and service offerings in text and videos, network with colleagues and stakeholders, and make valuable business contacts.

Connect on LinkedIn! 70-external-link