Rubber cup lump price December 2025 and outlook (see chart below)
- Southeast Asia:US$1.54/KG, -3.8% down
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Latest market developments for Rubber for December 2025
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Rubber cup lump price index
This post is a summary of the Rubber cup lump price developments. The price developments of Rubber cup lump are expressed in US$ prices converted FX rates applicable at the time when the price was valid. Rubber cup lump price index developments are calculated from multiple separate sources of data to ensure statistical accuracy.
The outlook for Rubber cup lump prices is generated from different inputs including:
- Very recent price developments of immediate cost drivers of Rubber cup lump prices
- Recent price developments of underlying feedstocks which drive the price of Rubber cup lump
- Market futures for both cost drives and feedstocks of Rubber cup lump prices
- Adjustment of current supply/demand imbalances in the Rubber cup lump market
- Longer term trends in likely demand conditions
What is Rubber cup lump and what is it used for
“Rubber cup lump” (often called “cup lump”) is a form of natural rubber coagulum that forms in the collection cup or container when latex from Hevea rubber trees coagulates. It is a relatively pure, solid form of field coagulum and is used as a raw material for natural rubber processing — blended or reworked into crepes, sheets or block rubber and ultimately used in products such as tyres, industrial rubber goods and other downstream rubber items.
How is Rubber cup lump produced
Cup lump is produced during latex harvesting: latex tapped from the tree drips into collection cups or buckets and the residual latex that remains on cup surfaces or drips later coagulates (sometimes aided by mild acids or by leaving the latex to set). After coagulation the cup lumps are removed, cleaned and may be washed, dried or smoked before being sent for further processing into crepe, sheet or block grades. Field coagula collection (cup lump, tree lace, smallholders’ lump, earth scrap) is a normal part of smallholder and plantation harvesting.
How large is the global market for Rubber cup lump
There is no widely reported market-size figure specific to “cup lump” alone; cup lump is a subset of natural rubber field coagula. For context, the global natural rubber market (of which cup lump is a small component when processed) was estimated in recent market reports at roughly USD 30–32 billion in 2024. Cup lump typically contributes only a fraction of total dry-rubber output (field coagula such as cup lump/tree lace together are reported to account for roughly 10–20% of dry rubber in many producing systems), so the cup-lump-specific market is considerably smaller than the total natural-rubber market and is usually traded/valued as part of overall natural rubber flows.
Where is Rubber cup lump produced
Cup lump is produced wherever natural-rubber latex is harvested — predominantly in tropical rubber-growing regions. The vast majority of natural rubber output (and therefore of cup lump) comes from Southeast Asia, with Thailand, Indonesia and Vietnam among the largest producing countries; smallholder plantations across Malaysia, India and parts of West Africa also produce field coagula. Recent industry reports note Southeast Asia supplies the bulk of world natural-rubber production and remains the main source of field coagula like cup lump.