... ,and anti-temperature.3.Application: When the Pump pressure is around 18Mpa,Temperature of mud ≤60°c,the service life is 200H.Second ... ,and anti-temperature.3.Application: When the Pump pressure is around 20Mpa,Temperature of mud ≤80°c,the service life is 400H.Third ... ,and anti-temperature.3.Application: When the Pump pressure is around 20Mpa,Temperature of mud ≤80°c,the service life is 500H.Fourth ...