RUBBER DESIGN GUIDE



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.
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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