The simplest part of the assembly often means the most important. The Silencers series from Camozzi provides efficient and reliable result in small sized industrial machinery. Made from only the highest grade materials, it can withstand even the most critical working condition. Body is made from 2901 - 2903: brass 2921 - 2931: coppering steel 2938 - 2939: polyethylene and the most important part - the silencing are made from 2901 - 2903 : stainless steel 2921 - 2931 : bronze (sintered) 2938 - 2939: polyethylene. For more features and benefits, a comprehensive manual is also included in the package.