High styrene rubber is used in rubber compound to increase the hardness and other physical properties of the neolite.

HSR 68 PHYSICAL PROPERTIES

ITEMS	INDEX
VOLATILE CONTENT	≤3.5%
ORGANIC ACID	3.5-5.5%
SOAP CONTENT	≤0.5%
COMBINED STYRENE	55-57%
TENSILE STRENGTH	≥ 12.0 Mpa
HARDNESS(SHORE A)	≥93
MOONEY VISCOSITY	45-60(1+4)100

high styrene rubber materials