Table 3. Preparation of NBR Compound. (unit : phr)

Material	T-3	T-4	T-5	T-6	T-7	T-8	T-9
NBR 2255				100
St/A				1
ZnO	4	4	4	4	5	5	5
RD				2
3C				2
sunflux 682				1
SRF				40
GPF				30
DOA	12	12	14	14	12	12	14
Sulfur	0.5	0.6	0.5	0.6	0.5	0.6	0.5
NS				1.5
DM				1.0
TT				1.0