Elastomeric seals. Material requirements for pipe joint seals used in water and drainage applications. Cast polyurethane sealing elements|Synthetic rubber, Seals, Potable water, Tensile strength, Polyurethane, Sealing materials, Water supply and waste systems (buildings), Pipelines, Hardness, Compression set, Rainwater pipes, Elastomers, Sealing rings, Drainage, Pipe couplings, Natural rubber, Casting (process), Drainpipes, Polymers, Pipes, Elongation at fracture, Toroidal sealing rings, Stress relaxation, Sewers, Ageing (materials)