The design of a cylinder gland seal varies according to factors such as the type of fluid, pressure levels, and temperature ranges. Common materials used for these seals include elastomers, such as nitrile rubber, polyurethane, and PTFE (Teflon). Each material has specific properties that make it suitable for particular applications. For example, PTFE seals are excellent for high-temperature applications due to their thermal resistance, while nitrile rubber is effective for a wide range of hydraulic fluids.