Owing to their sealing properties, rubber materials form a critical component of sanitary appliances. A number of countries already require certified materials to be installed in order to enhance the level of sanitary adequacy and to improve the level of public healthcare. These strict requirements have resulted in the development of high-tech rubber compounds for this sector.
In the German market, rubber compounds for sanitary appliances have to meet the DIN EN 681-1 standard, which defines certain physical and sealing properties for materials used in cold and hot water. When it comes to drinking water, the material has to comply with the DVGW W270 standard, which defines microbiological neutrality of the material, as rubber may not stimulate the growth of any micro-organisms. The DIN EN 681-1 and DVGW W270 standards define the requirements in connection with rubber compounds. The composition of a rubber compound has to comply with the KTW standard, including its positive and negative list of raw materials. The KTW testing has to be carried out with a final product, as the vulcanisation process can significantly affect chemical suitability of a product or material used in various tap water appliances.
The manufacturers of seals often have to deal with various requirements such as handling of gas, which is defined in the ISO EN 682 standard. Savatech can offer materials that perfectly comply with all the requirements set out in the mentioned standard.
The materials available for injection moulding and extrusion procedure:
EPDM 50 EN 681 WC
EPDM 60 EN 681 WC
EPDM 70 EN 681 WA, W270 D1/D2, KTW D1/D2
EPDM 60 EN 682
Some examples of rubber products: seals, sleeves, valves.