Raw material guidance
Temperature range: -40°C up to +100°C, short-term up to 120°C.
Resistance to silicone oils and greases, refrigerants; better ozone resistance, weather resistance and ageing resistance than NBR. Chlorinated rubber is very similar to PVC. Low water vapour permeability, good resistance to low and high temperatures, moisture, acids, salts and alkalis are the hallmarks of "CR".
The saturated framework structure leads to properties such as high weather and ozone resistance as well as high temperature resistance. Due to its high elasticity and good chemical resistance, it is used for various seals such as O-rings in mechanical seals or flat gaskets. EPDM is also a common material for hoses used with steam or hot water.
However, EPDM is not resistant to aliphatic and aromatic hydrocarbons and mineral oil products. Depending on the cross-linking system (sulphur or peroxide cross-linked) and the compound setting, a temperature range between -45°C and +160°C is possible.
Temperature range: -40°C up to +250°C
FKM has excellent resistance to high temperatures, ozone, oxygen, mineral oils, synthetic hydraulic fluids, fuels, aromatics, many organic solvents and chemicals. Gas permeability is low and similar to butyl rubber. Special FKM compounds have higher resistance to acids, fuels, water and steam.
Temperature range: -40 °C up to +130 °C
The vulcanisates made of nitrile rubber are highly resistant to oils, greases and hydrocarbons, have good ageing properties and low abrasion. They are used in the manufacture of seals, hoses, rubber gloves and rubber threads.
Temperature range: -50°C to +90°C
Much more hard-wearing than the conventional plastic variants and is therefore used, for example, for heavy-duty tyre applications in the construction industry. NR has good mechanical properties (very high strength, high elongation at break, very high impact elasticity and good abrasion resistance). However, no resistance to mineral oils and greases and very low ageing and ozone resistance.
Temperature range: -200°C up to +260°C
PTFE is absolutely weather- and UV-resistant. It is physiologically harmless and scores points for its excellent sliding properties. The material is universally resistant with the exception of liquid alkali metals and fluorine gases.
Polyurethane is a material that has ideal properties for numerous industrial applications. It has a high tensile strength and elasticity. In addition to high wear resistance, it is also resistant to mineral oils and greases.