ELASTOMERS 
Data Sheet
Rubber is a very flexible and elastic material with a high restoring force. In the technical application this material is officially named ELASTOMER.
The raw materials are natural or synthetic elastomers. A rubber mixture contains different additives. Through addition of heat, rubber becomes vulcanised. This process enables the elasticity of rubber. Deformation within the elastic range can be repeated limitless times without the change of the initial shape. As soon as the deformation forces are released, the elastomer returns back into its initial shape.
Elastomers are resistant against many acids, leaches and aromatic hydrocarbons which appear in the private, public and industrial sewage. For the sealing technology it is important to estimate this resistance, knowing the conditions of the joint such as the concentration of the medium, temperature, pressure as well as the static and dynamic strains.
The ideal elastomer material which is resistant to all gases and fluids does not exist yet. It is necessary to select the material which is the most suitable to meet the requirements demanded.
The most common elastomer types used in the sewage technology are EPDM, SBR, NBR, NR, IIR and IR which all meet the current standards, such as DIN 4060 and DIN EN 681.