The mechanical seal is mainly composed of a moving ring, a static ring, a cooling device, a compression spring, a sealing ring, and a fastener.

1. End face sealing pair of mechanical seals (static ring, moving ring)

The end face sealing pair makes the sealing surface closely fit to prevent the leakage of the medium. It requires that the static ring and the moving ring have good wear resistance, the moving ring can move flexibly in the axial direction, and automatically compensate for the wear of the sealing surface, so that it fits well with the static ring; the static ring has a floating property and acts as a buffer. For this reason, the sealing surface requires good processing quality to ensure that the sealing pair has good fitting performance.

2. Elastic elements of mechanical seals (springs, bellows, diaphragms)

The elastic element mainly plays the role of preloading, compensating and buffering. It is required to always maintain sufficient elasticity to overcome the friction of the auxiliary seal and transmission parts and the inertia of the moving ring, etc., to ensure the good fit of the end face seal pair and the followability of the moving ring. The material requires corrosion resistance and fatigue resistance.

3. Auxiliary sealing of mechanical seals (O-ring, V-ring, U-ring, wedge-shaped ring and special-shaped ring)

The auxiliary seal mainly plays the role of sealing the static ring and the moving ring, and also plays the role of floating and buffering. It is required that the sealing element of the static ring can ensure the sealing between the static ring and the gland and that the static ring has a certain degree of floating, and the sealing element of the moving ring can ensure the sealing between the moving ring and the shaft or the bushing and the Floatability. The material is required to be heat-resistant, cold-resistant and compatible with the medium.

4. Transmission parts of mechanical seals (transmission pins, transmission rings, transmission seats, transmission keys, transmission lugs or toothed couplings)

The transmission part transmits the torque of the shaft to the moving ring. The material is required to be resistant to wear and corrosion.

5. Fasteners of mechanical seals (set screws, spring seats, glands, assembly sleeves, shaft sleeves)

Fasteners are the positioning and fastening of static and dynamic rings. Correct axial positioning is required to ensure a certain amount of spring compression, so that the sealing surface of the sealing pair is in the correct position and maintains a good fit. At the same time, it is required to be easy to disassemble and assemble, easy to install, and can be reused. Where it cooperates with the auxiliary seal, the installation sealing ring must have a guide chamfer and the amount of elastic compression. Special attention should be paid to the wear resistance and corrosion resistance of the auxiliary seal of the moving ring and the shaft sleeve. Hard facing.

6. Anti-rotation parts of mechanical seals (anti-rotation pins)

The anti-rotation part is to prevent the stationary ring from rotating and coming out. Sufficient length is required to prevent the static ring from coming out under negative pressure, and correct positioning is required to prevent the static ring from rotating. The material is required to be corrosion-resistant, and a tetrafluoroethylene sleeve can be added in the middle if necessary to avoid damage to the carbon-graphite static ring.

Established in 2003, Ningbo Leap Seals Industry Co., Ltd is a professional China Mechanical Seals Manufacturers and Mechanical Seals Components Suppliers Manufacturers. The products are made of silicon carbide, tungsten carbide, stainless steel ,ceramic and so on. our wholesale mechanical Seals Components are widely used in various industry fields, except for complete set of mechanical seals and their replaceable accessories, we also welcome your customized tungsten carbide, silicon carbide, ceramic products, and stainless steel such as ring, sleeve, oil seat, and all kinds of irregular or complex products, Ningbo Leap industry want to accelerate co-development with clients from all over the world and create our glorious future together.