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2. Seal Design Oil seals come in various designs, such as lip seals, O-rings, and composite seals. The complexity of the design can impact production costs and, subsequently, the price. For example, a multi-lip seal may offer better sealing capabilities than a simple O-ring, but it will also require more intricate manufacturing processes, leading to higher prices.

- Dust Seals These seals act as the first line of defense against external contaminants. They are located outside the cylinder and help keep dirt and debris from entering the hydraulic system.