This Standard specifies requirements for materials used for moulded seals only of thermoplastic elastomeres (TPE) used in joints of: 1) thermoplastic piping systems for non-pressure waste water discharge (intermittent flow up to 95°C ) inside buildings; 2) thermoplastic piping systems for non-pressure underground drainage and sewerage (continuous flow up to 45°C and intermittent flow up to 95°C).