The high-performance expanded polytetrafluoroethylene (ePTFE) sealing material independently developed by our country has recently passed the deep-sea 11000 meter pressure test and aerospace high vacuum environment verification, becoming the world's first sealing solution that meets both "ultra-high pressure" and "ultra vacuum" dual limit conditions.
According to test data, the material has a compression deformation rate of less than 3% under simulated pressure environment in the Mariana Trench; In spacecraft vacuum chambers, the leakage rate is only 1/500 of similar products. Its unique microporous fiber biphasic structure can achieve nanoscale gas barrier and adapt to the thermal expansion and contraction deformation of deep-sea equipment.