O-Rings - Trelleborg Sealing Solutions - #10

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The temperature ranges apply in connection with media that compatible with the respectiv! elastomers

Temperature (°C| ] Operating temperature I I Onlytobes

Temperature range of «,

Elastomer materials are used to cover a large number of fields of application. Details regarding resistance in special media are shown in chapter "Chemical compatibility", page 9.

NBR (Nitrile Butadiene Rubber):

The properties of the Nitrile Rubber depend mainly on the ACN content which ranges between 18% and 50%. In general they show good mechanical properties. The operating temperatures range between -30°C and +100°C (for a short period of time up to +120X). Suitable formulated NBR can be used down to -60*C. NBR is mostly used with mineral based oils and greases.

FKM (Fluorocarbon Rubber!

Depending on structure and fluorine content FKM resistance and cold-flexibility.

FKM is known especially for its non-flammability, low gas permeability and excellent resistance to ozone, weathering and aging.

The operating temperatures of the Fluorocarbon Rubber range between -20°C and +200°C (for a short period of time up to +230T). Suitable formulated FKM can be used clown to -35°C. FKM is also often used with mineral based oils and greases at high temperatures.

EPDM (Ethylene Propylene Diene Rubber) EPDM shows good heat, ozone and aging resistance. In addition they also exhibit high levels of elasticity, good low temperature behaviour as well as good insulating

The operating temperatures of applications for EPDM range between -45"C and +15Q°C (for a short period of time up to +175°C). With sulphur cured types the range is reduced to -45 "C and +12Q°C (for short period of time up to +150°Q.

EPDM can often be found in applications with brake fluids (based on glycol) and hot water.

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