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Rubber steel flat

Rubber steel EPDM-KTW

EPDM rubber steel seals (KTW) are applied in water pipeline construction.
Vulcanized EPDM rubbers are mainly used because of their good chemical resistance. Apart from that, EPDM rubber is highly resistant to ozone, ageing and weather.
A steel ring vulcanized in the flange seal absorbs pressure and stabilizes the rubber seal. This makes the rubber seal self-center its outside diameter to the inside diameter of the screw holes (with inserted screws).

Use
  • wastewater (sewage plants)
  • drinking water

Technical Data

Material EPDM-KTW
Field of application drinking water/wastewater/sewage plants
Hardness Shore A 70
Density 1.120 g/ccm
Temperature max. +100 °C (temporary up to +130 °C)

Rubber steel NBR-KTW/gas

NBR rubber steel seals (gas admission/KTW-compliant) are applied in water, gas and refinery pipeline construction.
Vulcanized NBR rubbers are mainly used because of their good resistance to aliphatic hydrocarbons, mineral oils, mineral fats, and fuels. 
A steel ring vulcanized in the flange seal absorbs pressure and stabilizes the rubber seal. This makes the rubber seal self-center its outside diameter to the inside diameter of the screw holes (with inserted screws).


Use
  • gas
  • drinking water
  • biogas

Technical Data

Material NBR-GW
Field of application drinking water and gas facilities
Hardness Shore A 70
Density 1.196 g/ccm
Temperature -25 °C / +70 °C
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