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Technically Specified Rubber (TSR)
BSP is the owner of the symbol of SBZ. TSR
with the symbol of SBZ is produced under a well controlled conditions
to achieve product uniformity and consistency. Most of BSP's TSR
is sold at premium.
Currently BSP is producing five grades of
TSR namely SIR 3CV and SIR 10/20 and SIR 10/20VK. All these grades
must meet or exceed the specifications of Standard Indonesian Rubber
before they are exported overseas.
SIR 3CV is a high quality rubber produced
from field latex. Hydroxylamine Neutral Sulphite is added in the
process to achieve a constant viscosity in rubber. Therefore, storage
hardening of rubber is inhibited and maintained after the rubber
has been shipped to the users. This low Mooney viscosity provides
the users a shorter mixing time and hence reduces energy cost.
SIR 10/20 grades from BSP are general purpose
TSR produced from the carefully selected lower grades from the field.
SIR 10/20 VK are Mooney viscosity stabilized rubber which must also
meet the specifications of SIR 10/20 grade. They are used in tires,
engine mounts and other high quality rubber products.
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