For
mechanical seals used on rotating equipment, leak-proof 2507 stainless
steel bushings are unusable and must be repaired or replaced. Therefore,
it is necessary to set hoist bushings for long-term smooth operation
for the purpose of the selection of mechanical seals to reliability as
the primary indicator, at the same time refer to its price level. In general, welded metal bellows mechanical seal, relative to the
performance of other types of mechanical seals to be reliable, the main
factors are:
1. Bellows mechanical seal sealing surface force is relatively uniform;
2.
Bellows mechanical seal followability Welding sleeve better, to a
certain extent, make up due to the deflection of the shaft, equipment
vibration, static and dynamic ring and the sleeve of the coaxial error
and other factors, the resulting gap ( Generally less than 1μm), thus reducing the leakage of mechanical seals;
3. Bellows mechanical seal compared with large spring-type mechanical seal, the sleeve surface corrosion less affected;
4. Bellows mechanical seal static ring is bolted to the mechanical seal gland. Most
of the spring-type mechanical seal static ring, basically rely on
O-ring with the mechanical seal gland over-matching, and fluid pressure
and the role of the outer spring to be sealed by gland sealing surface
with the size and Corrosion degree, the sealing effect is poor.
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