Rubber Selection Data Chart
 
NATURAL
RUBBER
SBR
EPDM
NEOPRENE
CR
HYPALON®
CSM
NITRILE
NBR

ACRYLIC ACM

VAMAC®
SANTO-PRENE†

SILICONE
Si
THERBAN•
HNBR

VITON®
FPM
FLUORO-
SILICONE FSi
COST FACTOR
1
1
1
2
3
2
4
4
4
6
8
15
40
HARDNESS RANGE
30-95°
40-95°
30-85°
30-90°
40-85°
40-100°
50-85°
45-90°
50-100°
40-80°
50-95°
50-95°
40-80°
COLOURS
Full Range
Full Range
Limited Range
Full Range
Limited Range
Limited Range
Black
Limited Range
Full Range
Limited Range
Limited Range
Limited Range
Limited Range

HEAT RESISTANCE (°C)
Maximum Continuous
Maximum Intermittent

 
75°C
105°C

 
85°C
115°C
 
130°C
150°C
 
95°C
125°C
 
130°C
160°C
 
100°C
130°C
 
150°C
180°C
 
150°C
180°C
 
110°C
115°C
 
205°C
300°C
 
125°C
160°C
 
205°C
300°C
 
180°C
200°C
LOW TEMPERATURE RESISTANCE
-60°C
-55°C
-50°C
-40°C
-25°C
-20°C
-20°C
-40°C
-40°C
-60°C
(special grades -80°C)
-30°C
-20°C
-60°C
RESISTANCES
Oxidation
Ozone & Weathering
 
Fair
Poor
 
Fair
Poor
 
Excellent
Outstanding
 
Very Good
Very Good
 
Excellent
Outstanding
 
Good
Fair
 
Excellent
Excellent
 
Excellent
Excellent
 
Good
Good
 
Excellent
Outstanding
 
Excellent
Very Good
 
Outstanding
Outstanding
 
Excellent
Outstanding
OIL RESISTANCE
*ASTM Oil No. 1 @ 20°C
@ 100°C
*ASTM Oil No. 3 @ 20°C
@ 100°C
 
Poor
Unsatisfactory Unsatisfactory
Unsatisfactory
 
Poor
Unsatisfactory
Unsatisfactory
Unsatisfactory
 
Fair
Unsatisfactory
Unsatisfactory
Unsatisfactory
 
Excellent
Good
Good
Fair
 
Excellent
Good
Excellent
Fair
 
Excellent
Good
Excellent
Good
Excellent
100°C Excellent
150°C Excellent
Excellent
100°C Fair
150°C Fair
Excellent
100°C Excellent
125°C Excellent
Excellent
100°C Fair
125°C Poor
 Excellent
Fair
Fair
Fair
 Excellent
Good
Good
Fair
Excellent
Excellent
Fair
Fair
 
Excellent
150°C Excellent
Excellent
150°C Excellent
Excellent
150°C Excellent
Excellent
150°C Excellent
FUEL RESISTANCE
*ASTM FUEL B @ 40°C
Unsatisfactory
Unsatisfactory
Unsatisfactory
Poor
Poor
Fair
Poor
Unsuitable
Poor
Unsuitable
-
Excellent
Fair
(good at low temps)
SOLVENT RESISTANCE (20°C)
Alcohol
Acetone
Benzene
 
Good
Fair
Unsatisfactory
 
Good
Fair
Unsatisfactory
 
Good
Good
Unsatisfactory
 
Good
Fair
Unsatisfactory
 
Good
Fair
Unsatisfactory
 
Good
Unsatisfactory
Unsatisfactory
 
Good
Unsatisfactory
Unsatisfactory
 
Fair
Fair
Unsatisfactory
 
Good
Unsatisfactory
Unsatisfactory
 
Good
Fair
Unsatisfactory
 
Excellent
Good
Fair
 
Good
Unsuitable
Good
 
Good
Unsuitable
Good
CHEMICAL RESISTANCE
Acids
Bases
 
Fair
Good
 
Fair
Good
 
Good
Good
 
Good
Fair
 
Very Good
Good
 
Good
Fair
 
Poor
Poor
 
Fair
Good
 
Good
Very Good
 
Fair
Fair
 
Good
Good
 
Excellent
Good
 
Good
Fair
PHYSICAL STRENGTH
Excellent
Good
Good
Good
Good
Good
Good
Good
Good
Poor
Good
Good
Poor
COMPRESSION SET
Good
Good
Good
Fair to Good
Fair
Good
Good
Good
Fair
Fair
Good
Good
Good
TEAR & ABRASION RESISTANCE
Excellent
Good
Good
Good
Good
Good
Good
Good
Good
Poor
Very Good
Good
Poor
RESILIENCE
Excellent
Good
Very Good
Very Good
Fair
Good
Poor
Fair
Good
Good
Fair
Fair
Fair
PERMEABILITY TO GAS
Poor
Fairly Low
Fairly Low
Low
Low
Low
Low
Very Low
Fairly Low
Fairly Low
Good
Very Low
Fairly Low
ELECTRICAL STRENGTH
Excellent
Excellent
Excellent
Good
Good
Poor
Fair
Good
Excellent
Excellent
Poor
Good
Excellent
FLAME RESISTANCE
Poor
Poor
Poor
Self- extinguishing
Good
Poor
Poor
Fair
Retardent Grades Available
Good
Poor
Self- extinguishing
Self- extinguishing
WATER RESISTANCE
Very Good
Good
Excellent
Good
Very Good
Good
Poor
Good
Good
Good
Very Good
Good
Good


The aromatic content of oils has a moderate swelling effect on rubber. ASTM Oil No.1 (Flash point 243°C, Aniline point 124°C) has a swelling effect.
ASTM Oil No. 3 (Flash point 163°C, Aniline point 70°C) has a sever swelling effect. Both oils are petroleum based and are fully described in ASTM D471.

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© The Mech Spares Rubber Company Ltd. 2006-07