This gasket is made of paper-like material, often a high-quality gasket paper or fiber material, and it serves a similar purpose in the cooling system of an engine. 

Features:

• MaterialThe gasket is typically made from a durable paper or fiber material that can withstand the heat and pressure within the engine's cooling system. Some gaskets may also have additional coatings or layers to enhance their sealing properties.
• FunctionLike the rubber seal gasket, the paper-style gasket is used to create a seal between the thermostat and the engine block or housing. It prevents coolant from leaking out and ensures that the engine maintains the correct operating temperature.
• CompatibilityJust like with the rubber gasket, it's essential to ensure that the paper-style gasket is compatible with your specific vehicle make and model. Gaskets are designed to fit various engine configurations.
• InstallationProper installation is crucial to achieve a reliable seal. This typically involves cleaning the mating surfaces, placing the gasket in the correct position, and tightening the thermostat housing or cover bolts to the manufacturer's specifications.
• ReplacementOver time, gaskets can deteriorate due to heat and other factors, and they may need to be replaced during routine maintenance or when servicing the cooling system.
• MaintenanceRegular maintenance of the cooling system, including inspecting and replacing gaskets as needed, is vital for ensuring that the engine operates efficiently and does not overheat.

The choice between a rubber seal gasket and a paper-style gasket depends on the specific design of the thermostat housing and the engine. Manufacturers often specify the type of gasket to be used, so it's essential to follow their recommendations to ensure proper sealing and prevent coolant leaks.

When replacing a thermostat gasket, whether it's a paper-style or rubber seal gasket, it's a good practice to consult your vehicle's service manual or seek professional assistance if you are not experienced with automotive repairs. Using the correct gasket and ensuring a proper seal is essential to maintain the cooling system's integrity and prevent potential engine issues.