Ultra-clean coagulum TSR with dirt at or below 0.05% and PRI at or above 60.
SIR 5 sits between SIR 3L field-latex grades and SIR 10 coagulum TSR on cleanliness and color. Dirt content is at or below 0.05%, ash at or below 0.60%, PRI at or above 60, and Lovibond colour is held at or below 6 per SNI 1903 for premium light-color tread recipes.
Confirm dirt at or below 0.05%, ash at or below 0.60%, volatile matter at or below 0.80%, nitrogen at or below 0.60%, and PRI at or above 60 on the pre-shipment report. Lovibond colour at or below 6 is the primary light-grade control under SNI 1903 SIR 5 tables.
Premium passenger tread, light-color sidewall compounds, and specialty rubber goods where SIR 20 is too open on dirt but SIR 3L scheduling is unnecessary. SIR 5 shares the 35 kg bale format with other Indonesian TSR exports.
Partner mills in the Sumatra belt and Java compounding hubs produce SIR 5 on scheduled campaigns. Lead time is three to four weeks FOB Jakarta or Belawan. Named mill references travel with the contract for buyers who audit feedstock quality.
Premium light TSR ordering and specifications.
PRI at or above 60 on the pre-shipment COA, higher than SIR 10 and SIR 20 at 50. Combined with dirt at or below 0.05%, SIR 5 suits oxidative-sensitive premium tread recipes.
Lovibond colour index at or below 6 on the individual reading, per SNI 1903 SIR 5 tables. Colour is the primary grade control for this light coagulum TSR rather than a Mooney target.
19.6 MT in one 20 ft container, 560 bales of 35 kg on shrink-wrapped pallets. Lead time is three to four weeks FOB Jakarta or Belawan on scheduled production.
SIR 5 holds dirt at or below 0.05% with PRI at or above 60 and Lovibond at or below 6. SIR 10 allows dirt at or below 0.10% with PRI at or above 50 and Mooney near 61. Both are premium coagulum grades; SIR 5 is the cleaner light-color option.
Share volume, incoterms, and whether you need TSR, RSS, or latex. We reply with availability, COA parameters, and an indicative quote within one business day.
