Your Gasketmax gaskets are made out of Nitrile Butadiene which has excellent sealing properties, most closely representing OEM gaskets. We use material made in the USA for superior quality. We use state-of-the-art manufacturing processes. We cut each gasket with a 1000-watt bed laser cutter and vector cuts for amazing accuracy. We do not cut corners with CNC or plotter cutters as some do, so you can expect the best quality aftermarket gasket available We are family owned in the USA and operated since 1999! We are able to cut your gaskets cheaper, but not less quality than our competitors since the our material loss is less significant with our proprietary software.