PROPERTIES OF COMMON RUBBER TYPES AND PVC

(1 = excellent; 6 = inadequate)

NR

SBR

BR

NBR

CR

IIR

EPDM

PVC

Natural

Styr. But.

Butadien

Nitrile

Chloroprene

Butyl

Ethyl. Prop.

(Plastomer)

Breaking strength

1

2

4

2

2

3

3

5

Elongation at break

1

2

3

2

2

2

3

5

Abrasion resistance

4

2

1

2

3

4

3

4

Tear resistance

2

3

5

3

3

3

3

5

Cold flexibility

2

3

2

3

4

2

2

6

Heat resistance

4

4

3

3

2

1

1

5

Weather/ozone resistance

4

4

3

4

2

3

1

2

Oil resistance

6

5

6

1

2

6

6

2

Acid/base resistance

3

3

3

4

2

2

1

2

Flame resistance

6

6

6

6

2

6

6

2

Comparison of RMA and DIN
Conveyor Belt Cover Grades