BS EN 681-1. Elastomeric seals. Material requirements for pipe joint seals used in water and drainage applications. Part 1. Vulcanized rubber|Stress relaxation, Quality assurance, Thermal testing, Chemical-resistance tests, Ageing (materials), Test equipment, Tensile testing, Type testing, Pipelines, Synthetic rubber, WATER SUPPLY AND WASTE SYSTEMS (BUILDINGS), Drainage, Toroidal sealing rings, Elongation at fracture, Seals, Vulcanized rubber, Hardness, Elastomers, Compression testing, Designations, Type testing, Storage, Pipe couplings, Sewers, Pipes, Dimensional changes, Strength of materials, Sealing rings, Test specimens, Ozone, Pipe couplings, Potable water, Designations, Marking, Inspection, Compression set, Grades (quality), Water absorption, Storage, Natural rubber, Compression testing, Elastomers, Rainwater pipes, Tensile strength, Sewers, Mechanical testing, Drainpipes, Oil-resistance tests, Hardness, Potable water, Ozone, Ageing (materials), Chemical-resistance tests, Oil-re