In industries such as petroleum, chemical, coal chemical and fine chemical, the stable operation of centrifugal pumps is critical to the continuous and safe production of the whole plant.

API 682 seal support systems provide reliable support for mechanical seals to realize cooling, pressure stabilization, gas blocking and vaporization prevention.
 
Dandong Runhe Seal Co.,Ltd. specializes in supporting sealing systems for pumps. We develop and manufacture Plan series seal support systems in strict accordance with API 682 standards. We can flexibly provide proven

schemes including Plan52, Plan53A and Plan53B according to on-site medium and working conditions, suitable for various industrial scenarios such as medium & low pressure, volatile media and high-pressure

working conditions.
 
Each complete unit undergoes pre-assembly, hydrostatic test and leak inspection in the workshop to ensure easy on-site installation and reliable commissioning.
 
Our products are widely matched with industrial centrifugal pumps in petroleum refining, pharmaceutical chemical, power station and other sectors. For global engineering projects, we deliver one-stop sealing

solutions including working condition selection customization, standardized packaged supply and technical support.

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