The metal case reinforces the structure of the seal, allowing it to withstand external forces and maintain its shape under operational stress. Additionally, many seals feature a spring located behind the sealing lip, which exerts constant pressure on the lip against the shaft. This pressure helps maintain the integrity of the seal, especially in dynamic applications where the shaft is rotating.

3. Rod Seals Found in the rod of hydraulic cylinders, these seals prevent fluid from escaping as the rod moves in and out of the cylinder. They are crucial for maintaining pressure and ensuring proper functionality of the system.

Dust proof seals are designed to prevent dust, dirt, and other particulates from entering sensitive areas of machinery and equipment. This is particularly important in sectors such as manufacturing, automotive, aerospace, and electronics, where even minute particles can lead to significant operational issues. Dust can cause wear and tear on moving parts, interfere with electrical components, and ultimately reduce the lifespan of equipment.

   - Maintain records: Keep detailed records of seal replacement activities, including dates, parts used, and any observations or recommendations for future maintenance.