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Technical Data

Western Rubbers India Pvt. Ltd. has compiled a large collection of technical information as a service to its customers. Please make a selection from the categories below.

•	Relative Material Cost Comparison
•	Hardness of Rubber Durometer
•	Rubber Selection Data Chart
•	Materials

Rubber Selection Data Chart

-	Natural Rubber	SBR	EDPM	Neoprene CR	Hypalon* CSM	Nitrile NBR	Silicon Si	Therban• HNBR	Viton* FPM	Fluoro-Silicon FSi
Cost Factor	1	1	1	2	3	2	6	8	15	40
Hardness Range	30-95°	40-95°	30-85°	30-90°	40-85°	40-100°	40-80°	50-95°	50-95°	40-80°
Colours	Full Range	Full Range	Limited Range	Full Range	Limited Range	Limited 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°	130°C 160°C	100°C 130°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	-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 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 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	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 Unsatisfac tory	Good Fair Unsatisfac tory	Good Unsatisfac tory Unsatisfac tory	Good Fair Unsatisfac tory	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	Fair Fair	Good Good	Excellent Good	Good Fair
Physical Strength	Excellent	Good	Good	Good	Good	Good	Poor	Good	Good	Poor
Compression Set	Good	Good	Good	Fair to Good	Fair	Good	Fair	Good	Good	Good
Tear & Abrasion Resistance	Excellent	Good	Good	Good	Good	Good	Poor	Very Good	Good	Poor
Resilience	Excellent	Good	Very Good	Very Good	Fair	Good	Good	Fair	Fair	Fair
Permability to Gas	Poor	Fairly Low	Fairly Low	Low	Low	Low	Fairly Low	Good	Very Low	Fairly Low
Electrical Strength	Excellent	Excellent	Excellent	Good	Good	Poor	Excellent	Poor	Good	Excellent
Flame Resistance	Poor	Poor	Poor	Self- extinguishing	Good	Poor	Good	Poor	Self- extinguishing	Self- extinguishing
Water Resistance	Very Good	Good	Excellent	Good	Very Good	Good	Good	Very Good	Good	Good

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