The quality of the air filter gasket affects the entire process of filtration and the air that is sucked in by the engine. Each gasket must provide an airtight and durable connection between the filter and the housing in which the filter is installed.
The air gasket may seem to have a simple design, but its production requires extremely high technological expertise, numerous laboratory tests, and the highest production standards. Zanchen air filter gaskets are made from a unique chemical composition of polyurethane, ensuring the exact and required gasket properties. Choosing the right chemical composition of polyurethane is a trade secret and is the result of numerous studies and tests of our research and development department.
The basic requirement that the air filter gasket must meet is the appropriate deformation resistance. In the case of Zanchen filters, it meets the requirements of the Volkswagen Group. We verify in our laboratory whether the air filter gaskets are adequately deformed even under extreme conditions of operation of the filter by:
measuring the elasticity of the gasket after a period of 96 hours of compressing it to 60% at 110°C
measuring the elasticity of the gasket after 500 hours of storing the filter in a climate chamber with the air circulation set at 110°C
Another important requirement that the air filter gasket must meet is tensile strength and resistance to hydrolysis. These properties are also controlled in our laboratory using specialised measuring instruments.
