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Raw materials

MATERIALS NBR FPM EPDM PEROXIDE EPDM VMQ FFKM HNBR
Hardness Shore A 40 – 90 50 – 90 40 – 85 40-90 20 – 80 60 – 90 50 – 90
Continuous service temperature/
Maximum operating temperature in a short period of time
in ºC		 -20 to +100/+120 -20 to +200/+220 -30 to +110/+130 -50 to +130/+150 -60 to +160/+180 -15 to +320 -30 to +130/+150
Tear and abrasion resistance Good Good Good Good Poor Poor Very good
Resistance to acids Middling Excellent Good Good Middling Excellent Good
Chemical resistance Middling Excellent Good Excellent Very good Excellent Good
Dynamic properties Good Good Good Good Poor Middling Very good
Electrical force Middling Good Excellent Excellent Excellent Excellent Poor
Resistance to the flame Poor Autoextinguible Poor Poor Good Excellent Poor
Gas permeability Poor Very poor Very poor Very poor Very poor Poor Good
Oil ASTM #1 20ºC Excellent Excellent Middling Middling Excellent Excellent Excellent
Oil ASTM #1 100ºC Good Excellent Unsatisfactory Unsatisfactory Good Excellent Excellent
Oil IRM 903 20ºC Excellent Excellent Unsatisfactory Unsatisfactory Good Excellent Middling
Oil IRM 903 100ºC Good Excellent Unsatisfactory Unsatisfactory Middling Excellent Middling
Fuel resistance ASTM B at 40ºC Middling Excellent Unsatisfactory Unsatisfactory Very poor Excellent –
Ozone / Atmospheric agents Middling Excellent Excellent Excellent Excellent Excellent Very good
Alcohol at +20 ºC Good Good Good Good Good Excellent Excellent
Acetone at +20 ºC Unsatisfactory Very poor Good Good Middling Excellent Good
Gasoline at +20 ºC Middling Good Good Good Middling Excellent Good
Physical strength Good Good Good Good Poor Good Good
Compression Set Good Good Good Good Good Good Good
Resilience Good Middling Very good Very good Good Middling Middling
Water resistance Good Good Excellent Excellent Good Excellent Very good
Steam resistance Middling Middling Very good Excellent Poor Very good Very good
Oxidation Good Excellent Excellent Excellent Excellent Excellent Excellent
MATERIALS CR ACM FVMQ FEPM IIR CSM
Hardness Shore A 40 – 90 50 – 85 20 – 80 60 – 90 65 70
Continuous service temperature /
Maximum operating temperature in a short period of time
in ºC		 -40 to +100/+120 -20 to +150/+170 -60 to +180/+200 -20 to +220/+240 -40 to +120/+140 -25 to +110+130
Tear and abrasion resistance Good Good Poor Very good Middling Good
Resistance to acids Good Poor Good Excellent Excellent Middling
Chemical resistance Middling Muy Poor Excellent Excellent Excellent Middling
Dynamic properties Middling Middling Muy Poor Good Good Good
Electrical force Good Middling Excellent Excellent Excellent Good
Resistance to the flame Self-extinguishing Poor Self-extinguishing Excellent Excellent Very good
Gas permeability Poor Poor Muy Poor Poor Poor Poor
Oil ASTM #1 20ºC Excellent Excellent Excellent Excellent Poor Good
Oil ASTM #1 100ºC Good Excellent Excellent Excellent Poor Good
Oil IRM 903 20ºC Good Excellent Excellent Excellent Poor Middling
Oil IRM 903 100ºC Middling Excellent Excellent Excellent Poor Middling
Fuel resistance ASTM B at 40ºC Poor Poor Middling Excellent – –
Ozone / Atmospheric agents/td>

Very good Excellent Excellent Excellent Very good Excellent
Alcohol at +20 ºCC Good Good Good Middling Good Middling
Acetone at +20 ºC Middling Insatisfactoria Muy Poor Middling Good Good
Gasoline at +20 ºC Middling Poor Middling Middling Good Poor
Physical strength Good Good Poor Good Good Good
Compression Set Good Good Good Good Good Middling
Resilience Very good Poor Middling Middling Middling Good
Water resistance Good Poor Good Good Good Good
Steam resistance Poor Muy Poor Middling Excellent Good Middling
Oxidation Very good Excellent Excellent Excellent Good Good