Railway vehicles oil seals ensure the comfort of the interior environment and the safety of equipment through dustproof, waterproof and soundproof designs (such as door and window seals); their high and low temperature resistant and anti-aging materials (such as silicone and fluororubber) adapt to the vibration and extreme climate during high-speed operation, prevent rain and dust from invading core components such as the braking system, hydraulic cylinders and bearing boxes, reduce wear and extend service life; at the same time, seals maintain stable pressure in bogies and pneumatic pipelines to avoid brake failure or equipment failure caused by leakage, ensuring driving safety and operational reliability.