Best mechanical seal manufacturer today

O-ring mechanical seal manufacturer by The temperature always has a part in everything you do, for instance, a change in temperature can make you change your plans anytime anywhere. The same changes in temperature are somehow unavoidable in shaft seals, whether it is hot or cold; there is an influence to the shaft seals that can later be related to its lifespan. When the temperatures are very high the seal materials will experience negative changes in its mechanical features that would, in turn, affect the durability of the seals. Extreme temperatures can lead to the unexpected malfunction of the seal while at the same time the seal lip will be harder than normal and cracks will also be noticed in the point of contact. The high temperatures can be as a result of environmental factors and friction that is normally caused by the seal lip during its operations. The resultant of high temperature caused by friction is normally known as the ‘over temperature’ since the seal gap temperature is higher than the oil bath temperature.

We 100% follow original and exquisite seal design concept to make sure the perfect performance applied in the machines. Our grundfos pump seals have passed various certifications like ISO, SGS, and CE. Precise and advanced machines are purchased for ensuring the width, height, thickness, and diameters of each part, or it may cause mechanical breakdown to a certain extent. Stainless steel is the main material adopted for the sealing frame, sealing joints, and so on, which is for the rust resistance and corrosion resistance of the product. The product can be easily installed in the machines and offers high resistance when working. Besides that, it has the excellent performance of high and low temperature resistance, so it can stay stable under the working temperature from -30C to 200C. Find more info on mechanical seals supplier.

Here in Lepu john crane mechanical seal suppliers and john crane mechanical seals distributors, we are available in the widest array of materials options including high-performance silicone carbides. Until now, we have several types of products including type 1, 2, 21, and 502. Each of them plays a unique role in different industries. For example, John Crane type 1 is normally used by the pulp, paper making, petrochemical, food processing, waste water treatment, and chemical processing industries. John crane type 502 is popular in the industries of pump, mixer, blender, agitator, air compressor, blower, fan, and other rotary shaft equipment.

We use carbon and SIC as the raw materials for manufacturing the rotary and stationary seal parts. Due to the characteristics of the SIC, the product is endowed with the performance of stable chemical properties, low thermal expansion coefficient and good wear resistance. Besides that, the product is equipped with strong cast iron which gives it long service life. As for the secondary seal, we use EPDM to help the product gain the advantages of weather resistance, ozone resistance, heat resistance, acid and alkali resistance.

Lepu Seal (China mechanical seal manufacturers)can provide customized mechanical seal service according to clients’ special requests. We have many successful mechanical seal solutions in different industries, like food, chemical, paper making, and shipping, etc. It shows the process of our customized seal service below. Firstly, we will always collect customers’ requests about seals’ parameters, application, and so on, so that we can clearly know their needs. This step is so that important that it can’t be ignored and plays an important role in making the next few steps more smooth. Find even more details at

For better satisfying the needs of customers, the product can be provided with different shaft sizes ranging from 24mm to 100mm. In Lepu Seal, Alfa Laval mechanical seal LPSRU3 is a professionally designed mechanical seal replacement for Alfa Laval pump SRU3. Super light screws are designed on the seal ring, which both guarantees the easy operation and strong structure. Each product is designed with precise dimension ranging from 20mm to 45mm, which can satisfy the different needs of customers.