SIR 10 Premium TSR

Premium Indonesian TSR with dirt at or below 0.10%, ash at or below 0.75%, Mooney ML 61 plus or minus 5.

Lower dirt and ash than SIR 20 for premium tread lines
Mooney ML (1+4) at 100 °C: 61 plus or minus 5
35 kg shrink-wrapped bales, same handling as SIR 20
Graded to SNI 1903 SIR 10 tables with per-lot COA

Product overview

SIR 10 is the premium Indonesian TSR grade for tire tread and thin-gauge compounds that need lower dirt and ash than SIR 20. PRI is at or above 50 and Mooney ML (1+4) at 100 °C is centred at 61. Same 35 kg bale format and 19.6 MT container MOQ as SIR 20.

Premium SNI 1903 limits

Dirt at or below 0.10%, ash at or below 0.75%, volatile matter at or below 0.80%, nitrogen at or below 0.60%, PRI at or above 50. Laboratory testing is completed before bales are cleared for export stuffing.

Premium tire and industrial uses

Premium passenger tire tread, bicycle tires, and industrial compounds where filler dispersion benefits from cleaner rubber. Upgrade from SIR 20 when dirt and ash limits are written into your raw-material specification.

Packing and lead time

35 kg bales on shrink-wrapped pallets, 19.6 MT per container. Lead time two to three weeks FOB Jakarta or Belawan. Standing contracts can reserve SIR 10 allotments during peak tire seasons.

Frequently asked questions

Ordering, samples, shipping, and payment, answered by our export desk.

How does SIR 10 premium TSR differ from SIR 20 on this product page?

SIR 10 holds dirt at or below 0.10% and ash at or below 0.75% versus SIR 20 at 0.16% dirt and 1.00% ash. Mooney centres at 61 rather than 65. Both use the same 35 kg bale and 19.6 MT container format.

What dirt content limit is guaranteed on SIR 10 export lots?

Dirt at or below 0.10% (w/w) on the pre-shipment COA, tested per SNI 1903. Ash is at or below 0.75%. These are the parameters that justify the premium over SIR 20 tire grade.

What container MOQ applies to SIR 10 premium TSR orders?

One 20 ft FCL at 19.6 MT, 560 bales. Lead time is two to three weeks FOB Jakarta or Belawan. Trial containers can be discussed for first-time buyers evaluating premium tread recipes.

Is SIR 10 suitable for passenger tire tread compounds?

Yes. SIR 10 is specified when premium tread lines need cleaner rubber than SIR 20 without switching to smoked sheet. PRI at or above 50 and Mooney 61 plus or minus 5 suit most passenger tire mixers.