A major breakthrough in sealing technology - high-toughness sealing material

Our company's technical team and related institutions jointly conducted research and development, creating a PTFE modified material formula and production process. This material is made by filling modified PTFE with copper powder and other materials, which has overcome the technical difficulties of the fusion of PTFE and other fillers, achieving effective fusion of the fillers and PTFE, and significantly enhancing the toughness of PTFE products.

Ten years ago, when facing sealing components for special working conditions such as hydraulic breaker hammers, hydraulic splitting machines, and hydraulic blasting test machines, they had very high requirements for the material. Facing the severe tests of high temperature, high pressure, dust, vibration, short stroke and high frequency on the sealing components, the factory design life of sealing components in this field had always used 500 hours from abroad, while the service life of many domestic breaker sealing components was often only 300 hours or shorter. To develop long-life breaker sealing components, we first sent senior engineer Mr. Tang to the maintenance market to investigate the failure principle of breaker sealing components. Our engineer Mr. Tang lived and ate with maintenance workers in a well-known domestic breaker after-sales factory for more than a month, finally understanding that the cause of the sealing component failure was cavitation, that is, the high-pressure gas penetrating into the sealing component, long-term and rapid depressurization expansion causing cracks in the sealing component and resulting in component damage. The key factor was actually the insufficient toughness of the material. Then we organized technical research and development to create a high-toughness polytetrafluoroethylene formula material. We all know that toughness has no unit and there is no standard testing method. We improved the testing instrument to be able to detect the toughness of polytetrafluoroethylene materials and conduct horizontal comparison of our various formulas and vertical comparison with competing materials. Finally, we developed a sealing component formula material specifically for breaker that can compete with imported products from developed countries, solving the domestic substitution of breaker sealing components.