Rubber
mixture
Certifications Chemical
terminology

Principal
features

Temperature
range
Hardness
interval
Chemical
behaviour
NBR KTW
W270
ACS
WRAS
TGM
DVGW
COPOLIMERO BUTADIENE ACRONITRILE Outstanding resistance to oils, heat, and ageing. Good mechanical properties.
Low compression set and low permeability.
-40 °C
+130°C
40 - 92 Sha Mineral oils, hydrocarbons, water, vapour, gas, vegetal oils.
NR POLISOPRENE Outstanding elasticity, fatigue resistance, shear strength, and tear strength.
Excellent elongation at break.
-70 °C
+80°C
40  - 90 Sha Fair resistance to sea water, acids, and bases of medium concentration.
IR POLISOPRENE Exalted mechanical characteristics.
Good elastic properties at low temperatures.
-70 °C
+90 °C
40 - 93 Sha Being chemically similar to natural rubber (NR), it has the same limitations.
SBR COPOLIMERO BUTADIENE STIRENE Irrelevant properties, sufficiently cheap. -40 °C
+100 °C
40 - 92  Sha Slightly superior to NR.
ACM COPOLIMERO ACRILATO DI ETILE Better resistance to oils and temperature than NBR (anti-oil) -40 °C
+165 °C
50 - 60  Sha Aliphatic oil, heat, oxigen, ozone.
HNBR NITRILICA IDROGENATA Excellent field of mechanical values.
Excellent abrasion resistance.
Good compression set.
Good ageing behaviour.
-40 °C
+150 °C
50 - 90  Sha Mineral oil, hydrocarbons, water, vapour, gas, vegetals oil.
XNBR NITRILICO CARBOSSILATO High tensile strength, abrasion resistance and hot tear strength.
High adhesive bond and cohesion force.
-30 °C
+145 °C
65 - 90 Sha Mineral and vegetal oils, hydrocarbons, water, vapour, gas.
CR POLICLOROPRENE Fairs resistance to oils.
Excellent resistance to ozone, sea water, and ageing.
Good shear strength, abrasion and combustion resistance.
-20 °C
+120 °C
40 - 85 Sha Petroleum derivatives, sun light and atmospheric agents, ozone, flame.
CSM POLIETILENE CLOROSOLFONATO Outstanding resistance to ozone, heat, atmospheric agents, abrasion, shear strength and flame. -30 °C
+160 °C
50 - 80 Sha Outstanding resistance to strongly oxydizing aggressive chemicals.
IIR COPOLIMERO ISOBUTILENE ISOPRENE Outstanding dielectric strength.
Perfect osmosis seal.
-40 °C
+160 °C
45 - 75 Sha Liquid and gaseous fluids, oxigen, ozone, light, electricity, vegetal and animal oils, acids and bases.
EPM COPOLIMERO ETILENE PROPILENE Outstanding resistance to heat, atmospheric agents, and ageing.
Exceptionally low embrittlement temperature (-94 °C).
-90 °C
+140 °C
40 - 90 Sha Good resistance to aggressive chemicals and to oxygenation.
EPDM (zolfo) TERPOLIMERO ETILENE PROPILENE Outstanding resistance to heat, atmospheric agents, and ageing.
Exceptionally low embrittlement temperature (-94 °C).
-80 °C
+150 °C
40 - 90 Sha Good resistance to aggressive chemicals and to oxygenation.
EPDM (perossido) KTW
ACS
W270
WRAS
TERPOLIMERO ETILENE PROPILENE Outstanding resistance to heat, atmospheric agents, and ageing.
Exceptionally low embrittlement temperature (-94 °C).
-80 °C
+150 °C
40 - 90 Sha Good resistance to aggressive chemicals and to oxygenation.
EVA COPOLIMERO ETILENE VINILACETATO Good resistance to oxigen, ozone, high temperatures, water vapour. -50 °C
+170 °C
50 - 75 Sha Oxygen, ozone, high temperatures, vapour.
VMQ (Silicone) POLIDIMETIL-SILOSSANO Perfect behaviour towards high and low temperatures. Materials both highly
non-conductive and highly conductive.
-50 °C
+300 °C
40 - 80 Sha Chlorinated compounds, solvents, UV rays, ozone, oxygen, cold and heat.
FPM (Fkm - Viton) FLUOROPOLIMERO Outstanding resistance to chemical etching and perfect resistance to lubrificants and heat.
Good compression set and elasticity.
-50 °C
+280 °C
50 - 95 Sha Sun light and flame, high temperatures, aromatic and aliphatic hidrocarbons, aggressive chemicals and cholirinated solvents.
CO POLIEPICLORIDRINA Flame Resistance.
Good flexibility at low temperatures.
-40 °C
+160 °C
30 - 80 Sha Perfect resistance to oil.
Outstanding resistance to solvents, to many acids and to freon.