DS EN 14741:2006 Thermoplastics Piping And Ducting Systems - Joints For Buried Non-Pressure Applications - Test Method For The Long-Term Sealing Performance Of Joints With Elastomeric Seals By Estimating The Sealing Pressure Defines a method for determination of the long-term sealing pressure of elastomeric seals in assembled joints for buried non-pressure sewerage plastics piping and ducting systems.