Comparative Properties of Elastomer

COMPARATIVE PROPERTIES OF ELASTOMER
Properties	Natural	Butyl	Nitrile	Polychloroprene (Neoprene)	Hypalon	EPDM	Floroelastomer (Viton)	Silicon	Polyurethane
Tensile Strength of Carbon Black Loaded Elastomer.	Over 20.7 MPa.	Over 13.8 MPa.	Over 13.8 MPa.	Over 20.7 MPa.	Over 20.7 MPa.	Over 20.7 MPa.	Over 13.8 MPa.	Over 10.3 MPa.	–
Hardness Range (Durom.A)	30-90	40-75	40-95	40-95	40-95	40-90	55-95	40-85	60-99+A (upto 80 D)
Adhesion to Metals	Excellent	Good	Excellent	Excellent	Excellent	Good to Excellent	Fair to Good	Excellent	Excellent
Adhesion to Fabrics	Excellent	Good	Good	Excellent	Good	Good	Good to Excellent	Excellent	Very Good to Excellent
Tear Resistance	Good To Very Good	Good	Fair	Good	Fair	Fair to Good	Fair	Poor	Excellent
Abrasion Resistance	Excellent	Good	Good	Excellent	Excellent	Excellent	Good	Poor	Outstanding
Compression Set	Good	Fair	Good	Fair to Good	Fair	Good	Fair to Good (Exc. at high temp)	Fair	Fair
Hot Rebound	Excellent	Poor	Good	Very Good	Fair to Good	Very Good	Fair to Good	Excellent	Good (Poor at very low temp)
Cold Rebound	Excellent	Very Good	Good	Very Good	Good	Very Good	Good (Exc. at high temp.)	Excellent	Good at R.T
Dielectric Strength	Excellent	Excellent	Poor	Good	Very Good to Excellent	Excellent	Good	Good	Excellent
Electric Insulation	Good to Excellent	Good to Excellent	Poor	Fair to Good	Good	Excellent	Fair to Good	Excellent	Fair to Good
Acid Resistance (Dilute)	Fair to Good	Excellent	Good	Excellent	Excellent	Excellent	Excellent	Excellent	Fair
Acid Resistance (Concentrated)	Fair to Good	Good	Good	Good	Very Good	Excellent	Excellent	Fair	Poor

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