Index lookup · WPU06790918
Producer Price Index for carbon black across all production processes, a WPU commodity index for the reinforcing pigment used mainly in tire and rubber manufacturing. Index base: December 1983 = 100.
Latest value is 1 month old. Next update expected around Sep 2026.
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Enter a base value, a current value, and a contract amount to see the adjustment.
Strongest average month-over-month move historically: January (-3.4% avg).
Written into tire and rubber compound supply agreements, where carbon black is a major reinforcing filler cost. Feedstock oil price swings pass through with a lag, so a short averaging window on this index can understate the true cost move during a fast oil rally.
A starting point citing this series by name and code. Replace the bracketed terms with your contract's actual scope before use.
The [affected portion] of the Contract Price shall be adjusted using US PPI — Carbon Black, All Processes (BLS series WPU06790918), published by BLS. Base Period: the index value published for August 2026 (or the month of contract signing, if different) is the Base Value. Adjustment: at each Adjustment Date, the Current Value is the most recently published three-month average of the index (the Averaging Window). The Escalation Factor equals Current Value divided by Base Value. Cap: the Escalation Factor applied under this clause shall not exceed 1.10 or fall below 0.90 (a 10% cap and floor) in any single Adjustment Date, regardless of the index's actual movement. [Replace bracketed terms with your contract's actual affected-portion definition and adjustment-date schedule before use. This is a drafting starting point, not legal advice.]
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Compare the current value of BLS series WPU06790918 (Carbon Black) to its value at contract signing, turn that into a ratio, and apply the ratio to the carbon black-affected line items. A usable clause also names an averaging window, a publication-lag rule, and a cap.
Read more →Escalake tracks US PPI — Carbon Black, All Processes, applies your formula, and gives both sides a number they can confirm, no spreadsheet required.
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