Mechanical seal
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Our company is a petrochemical enterprise where the temperature is quite high, around 350 degrees. The seal models currently in use are DBM55 and DBM65. The seal manufacturers in China produce high-quality seals; I’m wondering what their prices are. If anyone knows, please recommend them to me! Thank you
In the past, clones were mostly used, and their price was acceptable.
Dandong Klon, Dalian Bogman. The cheaper option is Dandong Chenghai. Bogman is of good quality, but its price is a bit high!
Many of those we use are also Dandong clones and Dalian Bogman ones
Looking at the seal type, it’s a single-faced bellows seal with two different shaft diameters, right? You only mentioned the operating temperature, but not the properties of the medium! For pumps operating at such temperatures, double-seal types should be chosen, and the materials used for the sealing elements in various parts must be specified in detail with specific requirements In China, the sealing manufacturers that are capable of producing corrugated seals on their own include Sichuan Riji, Dandong Klon, and the former Xi’an Yonghua! For the joint venture factory, JHONCRANE can be approached; sealing technology for shaft diameters of this type is now highly developed!
Jiangsu Keao Fluid can provide customized mechanical seals for you
For domestic products, I recommend Dalian Huayang; I’ve been using it for several years
First-class manufacturers obviously use imported products – Fush, John Crane, Bogman. Second-class ones include Dandong Klon, Sichuan Nikki, Xi’an Yonghua, Dalian Huayang. Third-class products should be avoided. Since this is a high-temperature pump, the seal used is definitely a bellows double-seal type; however, the price also depends on the shaft diameter. Manufacturers that produce shafts with a smaller diameter of 20–30 mm need around 1 watt; for those with a larger diameter, the cost can be reduced to over 20,000. The imported manufacturer isn’t aware of it; to be honest, I’ve never used it.