Dear Customers and Business Partners,

Thank you for your interest in our products and services. Effective October 28, 2025, the DMH Group and PU1TEC were acquired by the Freudenberg Group. The operational business of the DMBH Group and PU1TEC will continue as usual. Detailed information about Freudenberg Sealing Technologies and the Freudenberg Group can be found at www.fst.com.

As part of the integration, we will also update the design of our website. You will continue to find an overview of our products and services.

If you have any further questions, please contact your representative or send us a message via our contact page.

Seals

The product

Guide rings are differentiated into piston and rod guide elements. They guide the rod centrally into the cylinder head and the piston into the cylinder barrel. Guide rings prevent the direct contact of the metallic components of the cylinder and absorb the lateral forces occurring during operation. They are manufactured primarily in straight or inclined slotted form. The former ensures that they can be easily mounted, in the latter, the inclined slot serves to prevent drag flow pressure. DMH manufactures wear bands in a variety of high-tech material qualities, which contribute significantly to lengthening the functional and operational reliability of the cylinder.


Overview

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