Dear Customers and Business Partners,

Thank you for your interest in our products and services. Effective October 28, 2025, the DMH Group was acquired by the Freudenberg Group. The operational business of the DMH Group 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 divided into piston and rod guide elements. They guide the piston centrically in the cylinder tube or the rod in the cylinder head. Guide rings prevent direct contact between the metal components of the cylinder and absorb the transverse forces that occur during operation. They are mainly manufactured in straight or slanted slotted form. The former ensures that the rings are easier to install. In the latter, the slanted slot serves to prevent drag pressure. Guide strips made of various high-tech materials are available under the DMH brand. They all contribute significantly to extending the reliable operation of the cylinder.


Overview

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Seals

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