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A mechanical seal is a device used on a rotating shaft to seal fluids. A mechanical shaft seal consists of 2 principal components - a rotary seal face and a driving mechanism. One component is stationary and the other rotates against it to achieve a seal. A stationary mechanical seal face which mates with the rotary and is retained using a gland or in some pump models an integral stuffing box cover. A tensioning assembly (utilizing springs or metal bellows) keeps the rotary face firmly positioned against the stationary face preventing, excluding, and containing contamination and leakage, both when the pump is not in operation and when the pump shaft is rotating.


A mechanical seal is a device that helps join systems or mechanisms together by preventing leakage (e.g. in a pumping system), containing pressure, or excluding contamination. The industrial mechanical seals are used on a variety of rotating equipment, including pumps, compressors, mixers, steam turbines, and other specialty equipment. They have applications in the oil and gas, pharmaceutical, chemical processing, mineral and ore processing, and general industries.


Wen dong is the top 10 mechanical seal manufacturer and mechanical face seals supplier in China. Our collection of mechanical seals is supported by strong aftermarket services and provides users with safety and environmental benefits. Our extensive range of mechanical seals includes double mechanical seals, metal bellow seals, rubber bellows mechanical seal, Teflon bellow seal, OEM, and special duty seals and systems.


Main features of mechanical seal

● Invisible leakage (vapor only)

● Requires less energy than packing

● Seals a pumps shaft while allowing it to rotate

● Minimal wear on the shafts or sleeves

● Some designs accommodate shaft deflections and "End Play"

● No periodic maintenance

● Up to 20-year life span


WenDong specializes in produce mechanical seals and custom mechanical seals solutions. By utilizing our extensive expertise, we can provide a complete solution to your challenge.

Chehe Industrial Park Shiqi Town Ningbo Zhejiang, China


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