What are the requirements of mechanical seal for KCB stainle

Mechanical sealing ring plays a great role in the sealing effect. Here we take the commonly used KCB stainless steel oil pump as an example to illustrate the importance of the sealing ring: 1) the surface of the auxiliary sealing ring is smooth and flat, and there shall be no defects such as bubbles, cracks, gaps and so on;

End face size should be uniform;

"O" ring of the burr and the best working face into a 45 degree Angle;

2) the hardness of the auxiliary sealing ring should be selected according to the pressure, the sealing pressure is higher, the hardness is higher;

The sealing pressure is lower, the hardness is lower.

Auxiliary sealing ring commonly used synthetic rubber;

3) Sealing the "O" sealing ring on the cylindrical surface, the inner diameter should be 0.5-1mm smaller than the outer diameter of the sealing point.

The inner diameter of the "O" sealing ring of the moving ring is relatively small, and the inner diameter of the "O" sealing ring of the static ring is smaller than that of the static ring.

4) the compression amount of the auxiliary seal should be appropriate. If the compression amount is too large, the sealing effect is good, but the friction resistance is large, the assembly is difficult, and the swimming compensation ability is poor in the work.

Too small compression, small friction resistance, easy assembly but poor sealing effect.

The "O" shaped ring of the static and static ring of the mechanical seal is a cylindrical seal, and its compression is about 8%-23% of the diameter of the transverse smooth surface.

Small in diameter, taking a percentage;

If the diameter is large, take a smaller percentage.

5) the compression of the "O" sealing ring should consider its other role, such as the static ring without anti-turnpin, the static ring "O" sealing ring plays a double role of sealing and anti-rotation, the compression of the "O" sealing ring should be larger, so as to avoid the rotation of the static ring and sealing failure.

The moving ring "O" sealing ring, on the premise of ensuring the sealing effect, the compression amount is smaller, so as to avoid the compression amount is too large and the resistance is too large and can not be floating compensation.

Author: Botou Oil Pump http://www.youbeng1.com/