Characteristics and Advantages of Rubber Bellows Mechanical Seal

Rubber bellows mechanical seals developed with rubber bellows are mainly used for water, oil and light applications. The rubber bellows seal is single acting and independent of the direction of rotation. These types of seals have unique rubber bellows with self-aligning function, which can help to compensate abnormal shaft and runout, thus extending service life. Rubber bellows protect the shaft or sleeve from wear.

Special materials can be provided to meet the requirements of customers. The seal can be widely used in various occasions. The components of the rubber bellows seal can be identified as rotating surface, fixed surface, elastomer, bellows, spring and other hardware.

Rubber bellows mechanical seal characteristics: The rubber bellows mechanical seal has a single action with high strength and is durable. The spring-designed seal is used for bidirectional rotation of the shaft. Bellows designed seals are used for pressure support and eliminating wrinkles. They have nothing to do with the direction of rotation and torque transmission of the elastic bellows.

Advantages of rubber bellows seal:

1. Low cost, because it is mass produced in the world.

2. No sliding elastomer or "O" ring. There's nothing to hang on the shaft.

3. Easy to install: it can be tightened or fixed on the shaft without any measurement.

4. Most designs are located near the shaft shoulder or are linked to the shoulder directly cast into the impeller.

5. Availability: you can buy these seals from various manufacturers, distributors and bearing factories.

6. No shaft or sleeve fretting: after proper installation, the gasket will not wear or damage the shaft or sleeve, because there is no relative movement between the rubber sleeve and the shaft or sleeve.