---
title: "RUBBER-Japan futures range-bound on supply uncertainty"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/286023015.md"
datetime: "2026-05-12T02:11:03.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/286023015.md)
  - [en](https://longbridge.com/en/news/286023015.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/286023015.md)
---

# RUBBER-Japan futures range-bound on supply uncertainty

By Ruth Chai

May 12 (Reuters) -

-   Japanese rubber futures are range-bound on Tuesday as traders are uncertain about supply from top producer Thailand, whose rubber trees are approaching peak seasonality amid heavy rains that are hampering tapping.
-   The Osaka Exchange (OSE) rubber contract for October delivery (JRUc6) (0#2JRU:) was up 3.9 yen, or 0.94%, at 417 yen ($2.65) per kg as of 0156 GMT.
-   The rubber contract on the Shanghai Futures Exchange (SHFE) for September delivery (SNRv1) rose 110 yuan, or 0.62%, to 17,920 yuan ($2,636.30) per metric ton.
-   The most active June butadiene rubber contract on the SHFE (SHBRv1) gained 210 yuan, or 1.37%, to 15,580 yuan per metric ton.
-   Rubber prices are range-bound as traders expect supply to ease as Southeast Asian rubber trees approach the peak harvesting period, though weather-related concerns still linger.
-   The prices of Thailand’s benchmark export-grade smoked rubber sheet (RSS3) (RUB-RSS3C-BKK) and block rubber (RUB-STR20C-BKK) were both down around 0.5% to stand at 97.77 and 78.5 baht per kg, respectively.
-   However, the meteorological agency of top producer Thailand warned of heavy rain and flash floods in the south, where the country’s rubber plantations are concentrated, over the next week.
-   In addition, higher oil prices support natural rubber prices, as its substitute, synthetic rubber, is made from crude oil.
-   Oil prices rose in early Asian trade on Tuesday as negotiations to end the war between the United States and Iran appeared fragile, with Tehran’s response to a U.S. proposal highlighting stark differences that kept supply concerns alive. (O/R)
-   Traders are also eyeing U.S. President Donald Trump’s visit to China, where deals on agriculture and commercial aviation are said to be discussed.
-   The visit is expected to generate positive news, which could boost market sentiment, a Singapore-based rubber trader said.
-   The front-month rubber contract on Singapore Exchange’s SICOM platform for June delivery (STFc1) last traded at 222.2 U.S. cents per kg, down 0.5%.

($1 = 157.5200 yen)

($1 = 6.7974 yuan)

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