DIN 1.4501 Spiral wound gaskets 1. 32 years manufacturing experience. 2.the best quality and price DIN 1.4501 Spiral wound gasketsRing joint gasket can be used under the vacuum condition of 1000kgf/cm² and more for high-pressure vessel, tower and vessel, valve bonnet, etc. including high-temperature and high-pressure steam, oil, gas, solvent, etc.There are oval type and octagonal type as its ...