Metal bellows seals
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metal bellows seals
Metal bellows seals contain the welded metal bellows seals and formed metal bellows seals.
The metal bellows seals have no dynamic secondary seals, so it avoid the destroyed by the secondary seals and shaft abrasion . further more, the bellows will have automatic cleaning due to the acentric force .
The pure graphite as secondary seals can increase the resistance to high temperature and chemical corrosion, fewer parts and easy installation.
The metal bellows seals are not suitable for the high pressure condition, but through the reduceing pressure design or back balanced design can increase the resistance to high pressure.
Many types in size , and the diameter can up to 1500MM.