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Technical Specified Rubber

TSR 20  which is also known as block rubber is graded according to precise technical parameters such as dirt content, ash content, nitrogen content, volatile matter and properties of the rubber such as its Wallace Plasticity (PO) and its Plasticity Retention Index (PRI). Below you can find an overview of the specifications per grade per region:

Limits of TSR 20 grade Vietnam ISO Malaysia Thailand Indonesia
SVR 20 Test Method TSR 20 SMR 20 STR 20 SIR 20
Dirt (max, %wt) 0.16 ISO 249:1995 0.20 0.16 0.16 0.20
Ash (max, %wt) 0.80 ISO 247:1990 1.00 1.00 0.80 1.00
Nitrogen (max, %wt) 0.60 ISO 1656:1996 0.60 0.60 0.60 0.60
Volatile matter (max, %wt) 0.80 ISO 248:1991 0.80 0.80 0.80 0.80
Initial Wallace plasticity (min) 30 ISO 2007:1991 30 30 30 30
Plasticity Retention Index (min) 40 ISO 2930:1995 40 40 40 50
Lovibond colour (max, indiv. value) N/A ISO 4660:1999 N/A N/A N/A N/A

 

 

For more information regarding the application(s) per grade please click here.

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