Slip-on flanges are primarily applicable for fluids working at low pressure. Also, these flanges work well with little chance of leakage. These flanges work well in cooling water lines, firefighting water lines, and low-pressure compressed airlines. Along with this, slip-on flanges are suitable in process lines to maintain the stream of steam, oil, gas, condensates, etc. These flanges are applicable for low pressure and higher temperature system.http://www.gcflange.com/slip-on-flanges/