Use parameters: maximum pressure: 2.5Mpa maximum temperature: 220 ° C maximum speed: 220rpm applicable medium: steam, saturated steam, water, over hot water. Structural characteristics: to maintain the original spherical seal, simple structure, stable sealing performance, easy maintenance, etc.; eliminated under high temperature conditions, the spring fatigue failure, and lead to leakage of seal damage fatal flaw. Spring to the pressure can be adjusted at any time, the seal is more reliable, more reasonable compensation.