Use features: the highest pressure: 1.8MPa maximum temperature: 200 ° C maximum speed: 500rpm applicable medium: cooling water, hot water, saturated steam. Structural characteristics: the most important feature of its structure is a corrugated compensation and floating seal rings for dynamic sealing the main form of its sealing can freely get adjustment and compensation, to make the seal more reliable, stable, and its sealing device externally mounted structure, so that the face pressure downward trend, reduce wear and extend service life.