WinderosaTM manufactures the highest quality gaskets for the two cycle engine industry in its modern computer controlled facilitates in the USA Winderosa sTM extensive range of high tech materials provide unmatched reliability and performance for the demanding needs of today s power plants WinderosaTM products are sold in 38 countries on six continents. This exposure to varying fuels and climates is the ultimate field test WinderosaTM performance oil seals have a high chromium content stainless steel alloy springs for maximum performance and corrosion resistance Full gasket sets with oil seals Contain all gaskets necessary for professional engine rebuilding, including high performance oil seals Designed for complete engine rebuilding. Full top sets without oil seals Contain high performance head and base gaskets plus intake and exhaust gaskets. Designed for cylinder rebuild and piston replacement.