1, the end plane is not greater than zero.
0009 mm, hard kettle with mechanical seal material sealing end surface roughness is not greater than zero.
Soft material sealing end surface roughness is not greater than zero.
2, static contact with the auxiliary seal ring and rotating ring seal face of end face of parallelism;
And stationary ring and rotating ring contact with auxiliary seal ring of pump mechanical seal with a surface roughness is not greater than 3.
2 microns, cylindrical or inner hole size tolerance for h8 or h8.
3, spring seat, transmission of inner hole size tolerance for F9, surface roughness is not more than 3.
4, cauldron-using machinery seal static ring seals auxiliary seal ring and static ring cylindrical vertical degree, rotating contact with the rotating ring auxiliary seal ring seal face of the inner hole of the vertical degree qualify.
5, the size of the O rubber sealing ring series and tolerances according to the requirements, the technical conditions according to the provisions of the relevant standards;
Cauldron-using machinery seal used built-in bearings for spherical roller bearings.
6, graphite ring, filling ptfe ring and rotating ring, stationary ring assembly to do water pressure test.
The test pressure as the design pressure of 1.
5 times and lasts 10 min, there should be no leakage phenomenon.
More than 7, for the spring mechanical seal, the same set of mechanical seal in the free height difference between each spring is not greater than zero.