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4. Backup Rings Used with O-rings, backup rings help to prevent extrusion of the O-ring under high pressure conditions, thereby enhancing durability and performance.

Conclusion

In mechanical systems, dust seals are frequently found in areas such as wheels, bearings, and hydraulic cylinders. Their design usually features a lip or flange that creates a barrier against particulate matter. By keeping contaminants at bay, dust seals help maintain the integrity of moving parts, extending their lifespan and reducing maintenance costs.

The design of high-pressure rotary shaft seals typically includes a flexible sealing lip that makes contact with the rotating shaft, combined with a robust outer component that holds the seal in position. The materials used in these seals must be durable and resistant to wear, heat, and chemicals. Common materials include elastomers like nitrile rubber, fluorocarbon rubber, and special composites designed for high-performance situations.