Specifies requirements for materials used for moulded seals only of thermoplastic elastomers (TPE) used in joints of thermoplastic piping systems for gravity waste water discharge (intermittent flow up to 95°C) inside buildings, thermoplastic piping systems for gravity underground drainage and sewerage (continuous flow up to 45°C and intermittent flow up to 95°C), and thermoplastic rainwater piping systems.