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Rubber Standard |
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Comparison Guide to Elastomer Properties |
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Natural Rubber |
SBR |
EPDM |
Neoprene |
Nitrile |
Urethane |
Silicone |
Fluorocarbon |
Chemical Name |
Polyisoprene |
Styrene Butadiene |
Ethylene Propylene |
Chloropene |
Acylonitrile Butadiene |
Polyester/ Polyether Urethane |
Polysiloxane |
Fluorinated Hydrocarbon |
| SAE 1200- ASTM D-2000 |
AA |
AA,BA |
BA,CA,DA |
BC,BE |
BF,BG,BK |
BG |
FC,FE,GE |
HK |
| Classification
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| ASTM Designation (D-1418) |
NR |
SBR |
EPDM, ERP |
CR |
NBR |
AU,AU |
Psi, PVsi, Si, Vsi |
FKM |
| Physical Properties
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| Specification Gavity |
0.93 |
0.94 |
0.86 |
1.23 |
1.00 |
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0.95-1.20 |
1.4-1.95 |
| Durometer, Range |
30-100 |
40-100 |
30-90 |
40-95 |
30-90 |
55-100 |
25-90 |
55-90 |
| Tensile Strength |
E |
F-G |
VG |
VG |
VG |
E |
F-G |
VG |
| Elongation |
VF-E |
G |
G |
G |
G |
G-VG |
VG-E |
F-G |
| Compression Set |
G |
G |
G |
F-G |
G |
G-E |
G-E |
G-E |
| Heat Resistance |
F |
F-G |
VG-E |
F-G |
G |
F-G |
E |
E |
| Resilience or Rebound |
E |
F-G |
G |
VG |
F-G |
F-E |
G |
F |
| Impact |
E |
E |
G |
G |
F |
G-E |
P-G |
E |
| Abrasion |
E |
G-E |
G-E |
G-E |
G-E |
E |
P-E |
F-G |
| Tear |
E |
F |
F-G |
F-G |
F-G |
E |
P-E |
F |
| Cut Growth |
E |
G |
G |
G |
G |
G-E |
P-F |
P-F |
| Flame Resistance |
P |
P |
P |
G |
P |
P-F |
F-G |
VG-E |
| Impermeability, Gas |
F |
F |
F-G |
F-G |
G |
P-F |
F-G |
E |
| Weathering Resistance |
P-F |
F |
E |
V-G |
F-G |
G-E |
E |
E |
| Low Temperature Limit |
-10°to -50°F |
0° to
-50° F |
-20° to
-60° F |
-10° to
-50° F |
-30° to
-40°F |
-10° to
-50° F |
-65° to
-150° F |
+10° to
-40° F |
| Hight Temperature Limit |
158° to 255° F |
158° to 225° F |
300° to 350° F |
225° F |
275° F |
250° F |
400° to 550° F |
400° to 450° F |
| Chemical Resistance Properties
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| Acid |
F-G |
F-G |
G |
G |
G |
P-F |
F |
G-E |
| Alcohols |
G |
G |
F-G |
V-G |
F-G |
F-G |
G |
F-E |
| Aliphatic Hydrocarbon Solvents |
P |
P |
P |
G |
E |
G |
P-F |
E |
| Akali |
F |
F |
VG |
E |
VG |
P |
P |
F-G |
| Animal & Vegetable Oil |
F |
F |
G |
G |
VG |
G |
G |
E |
| Aromatic Hydrocarbon Solvents |
P |
P |
P |
P-F |
F-G |
P-F |
P-F |
E |
| Oil & Gasoline |
P |
P |
P |
F-G |
G-E |
G-E |
P-E |
E |
| Oxygenated Solvents |
G |
G |
VG |
P-F |
P |
P |
F |
P |
| Water |
E |
G-E |
E |
G |
G-E |
G |
G-E |
G |
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Key: E=Excellent; VG=Very Good; G=Good; F=Fair; P=Poor |
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Tolerances for mouldings |
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