In recent years, global sealing technology companies—names like Freudenberg, Parker Hannifin, and SKF—have been pouring billions into one of the most volatile frontiers in clean energy: hydrogen.
At first glance, it seems obvious. Hydrogen boasts an energy density three times greater than gasoline, and a staggering 100 times that of lithium batteries. It’s often hailed as the "fuel of the future." But there's a catch: the molecule itself.
Hydrogen atoms are so small, they can slip through conventional rubber seals with ease. Add extreme conditions—pressures up to 70 MPa and temperatures plunging to minus 253°C—and you have a recipe for chaos. Materials brittle. Seals fail. And that’s precisely the opportunity.
Governments around the globe are throwing unprecedented financial support behind hydrogen infrastructure. From the European Union’s Hydrogen Strategy to China’s Five-Year Plan a......
How to break the sealing dilemma under harsh working conditions? In the strong acid of chemical reactions, under the high temperature and pressure of 150℃ at the bottom of oil and gas wells, and in the extremely cold environment of liquid oxygen pipelines in spacecraft, traditional rubber seals are undergoing unprecedented tests. Brittleness, swelling, cracking... Every seal failure may cause equipment worth millions to shut down, or even cause major safety accidents. What kind of guardian do these key parts with "industrial blood" need?
Rubber more expensive than gold--perfluoroether rubber
The DMHUI (Demeihui) team has gone through difficulties and introduced the sealing material-perfluoroether rubber (FFKM) into the field of industrial sealing. This "magic rubber" with a raw material cost per kilogram of gold has amazing performance parameters:
Associate Professor Yong Zhanfu of the School of Polymer Science and Engineering of Qingdao University of Science and Technology, with his profound attainments in the fields of polymer material fatigue life prediction, rubber mechanical simulation and software secondary development, recently visited Demeirui Mechanical Seals Factory in Julu County, Hebei Province for in-depth technical guidance. This exchange is not a simple visit, but a key action to inject strong momentum into the future development of the factory and clarify the path of technological upgrading, which significantly enhances the core competitiveness of the enterprise.
On-site diagnosis, indicating the direction of process optimization and quality improvement:
In Demeirui's production workshop, Professor Yong went deep into the front line and carefully inspected the entire process of rubber seals from raw material proc......
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