Polymer Comparison Chart

ELASTOMER ABBREVIATIONS

NR	Natural Rubber	CR	Polychloroprene (Neoprene)
IIR	Butyl	NBR	Nitrile (Buna-N, Hycar®)
EPDM	EPDM	BR	Polybutadiene (Taktene®)
CO/ECO	Epichlorohydrin (Hydrin®)	IR	Polyisoprene
AEM	Ethylene/acrylic (Vamac®)	SBR	SBR (Buna-S, GRS)
FKM	Fluoroelastomer (Viton®, Dyneon®, Aflas®)	VMQ	Silicone
FVMQ	Fluorosilicone	AU/EU	Urethane
CSM	Chlorosulfonated polyethylene (Hypalon®)	FFKM	Perfluoroelastomer

Rating Code

E

Excellent

G

Good

F

Fair

P

Poor

NR

IIR

EPDM

CO/ECO

AEM

FKM

FVMQ

CSM

CR

NBR

BR

IR

SBR

VMQ

AU/EU

FFKM

HARDNESS RANGE (SHORE A)

30-95

35-80

30-90

40-90

40-90

60-90

60-90

40-90

25-95

30-90

40-80

30-95

40-90

20-85

45-100

65-95

TENSILE STRENGTH MAX PSI

4000

2500

3000

2500

2500

3000

2000

3000

3000

3000

2500

3500

3000

1500

8000

2000

ELONGATION MAX %

750

700

600

400

700

450

700

600

600

600

500

750

600

800

750

300

RESILIENCE

E

P-F

G

F

F

F

G

F-G

G-E

F-G

E

E

G

F-G

G

G

COMPRESSION SET

G

F

G

F

G

G-E

G

F

F-G

G

F-G

G

G

G-E

G

G

IMPERMEABILITY TO GASES

F-G

E

F-G

E

F

E

G

G-E

G

G-E

F-G

F-G

F

F

P-F

E

ABRASION RESISTANCE

E

G

G-E

F-G

G

G

P

G-E

G-E

G

E

E

G-E

p

E

G

OZONE RESISTANCE

P

E

E

E

E

E

E

E

F-G

P

P

P

p

E

E

E

HEAT RESISTANCE

F

G

E

G-E

G-E

E

E

G

G

G

F

F

G

E

G

E

LOW TEMPERATURE FLEXIBILITY

G-E

F

E

G

P-F

F-G

E

F-G

F-G

F-G

G-E

G

G

E

G

F-G

CHEMICAL RESISTANCE:

OIL AND GASOLINE

P

P

P

G-E

F

E

E

G

G

E

P

P

P

F

G

E

ANIMAL AND VEGETABLE OILS

P-F

G

F-G

G-E

G-E

E

E

F-G

G

E

P-F

P-F

P-F

F-G

F-G

E

AROMATIC HYDROCARBONS

P

P

P

G

P-F

E

E

F

F

G

P

P

P

P

P

E

 

Trademarks

• Hydrin® - Zeon Chemicals Inc
• Hycar® - B. F. Goodrich Company
• Aflas® - Asahi Glass Company
• Taktene® - Bayer Inc
• Viton®, Vamac® and Hypalon® Kalrez® are registered trademarks of DuPont Performance Elastomers.
• Fluorel®, Dyneon® - are registered trademarks of Dyneon LLC, a 3 M Company