Precautions for Metal Bellows Mechanical Seals

The application range of bellows mechanical seals is very wide, from low temperature to high temperature, from neutral medium to corrosive medium, from low speed to high speed, from ordinary to harsh working conditions. Bellows include rubber bellows and serpentine sleeves, plastic bellows and metal bellows. Rubber bellows and serpentine sleeves are used as auxiliary seals for low-load mechanical seals; plastic bellows are used as auxiliary seals for mechanical seals with strong corrosive media; metal bellows are used for mechanical seals with high temperature, high pressure and low temperature media, which can be used as auxiliary seals and elastic elements.

Metal bellows should have greater elasticity, strength and rigidity. It can be used in occasions with a pressure of 7Mpa, suitable for high and low temperature operations, temperature resistance of -240℃~+650℃, and the film thickness is not more than (<0.4mm), which determines that the bellows material is required to have high corrosion resistance and be used for neutral media.