Which are the better domestic manufacturers of mechanical seals for pumps?
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As the title suggests, the main media used for transportation are: dilute acid (sulfuric acid at 16-18%), slurry (with a solid content of 45% and a particle size of 100 mesh), or perhaps that expert can recommend some manufacturers.
Joint ventures: Bogman, John Klan Domestic manufacturers: Sichuan Nikki, Dandong Klon, Chengdu Yitong, Dalian Huayang, Xi’an Yonghua
I’ll go with John Kran’ s anyway; it’s worth the extra cost!
Beihua Machinery is also good; many of the equipment in our unit used to be from Beihua Machinery.
We used Bogman models more in the past; they have good quality and a long service life.
How is this medium transported? Pump? How is the material selection determined?
The key is to specify the operating conditions in more detail. Actually, Chuanmi, Xi’an Yonghua, and Klon are all fine options; Bogman’s seals are really mediocre, and their service is poor as well.
Tianjin Lianqiang is also good; most of the domestically produced sealing components used in our company are from them.
Borgman has good quality; I’ve sold some of them and they’re excellent. Domestic products are improving gradually, but for certain specific applications, joint-venture brands are still the better choice
In the domestic market, clones and Japanese brands are sufficient; the joint venture brand John Crane is quite good. As for Borgman’s products, they seem to have no distinct foreign or local character – their price is okay but their quality is average, and their after-sales service is not very good.