天然ゴムと合成ゴム: 選び方

What the two families actually are Natural rubber (NR) is harvested as latex from Hevea brasiliensis trees. Synthetic rubber (SR) is made by polymerizing petroleum-derived monomers such as styrene, butadiene, ethylene and propylene. Together they form the backbone of the global rubber industry.

Global scale (2025, sourced from public market research) - The global rubber market reached roughly **USD 382 billion** in 2025, with synthetic rubber about **62%** and natural rubber about **38%** of value. - Natural rubber supply is concentrated: Thailand, Indonesia and Vietnam together produced about **68%** of the world's NR in 2025. - China is the world's largest rubber consumer, using more than **11 million tonnes** in 2025 — over **33%** of global demand.

Where each one wins - **Natural rubber (NR):** highest tensile and tear strength, excellent resilience and flex fatigue. Best for dynamic, high-stress parts such as tires, mounts and conveyor belts. Poor oil and ozone resistance; service range about -50 to +70 °C. - **SBR (styrene-butadiene):** low-cost general purpose, good abrasion resistance; the default base for tire treads and general sheet. No oil resistance. - **NBR (nitrile):** the standard oil- and fuel-resistant elastomer (-30 to +120 °C). - **EPDM:** outstanding weather, ozone and steam resistance (-45 to +150 °C); not for mineral oil. - **FKM (fluorocarbon):** extreme heat and chemical resistance up to +250 °C; premium cost.

How to decide Start from the media the part touches and the temperature it sees. Oil contact points to NBR; outdoor weathering points to EPDM; heat plus aggressive chemicals point to FKM. For pure mechanical resilience at low cost, NR or SBR lead. Always confirm the exact grade against the supplier's datasheet — compound formulation shifts every property.

Explore real supply Our catalog already lists verified rubber raw materials, additives and finished rubber products across dozens of categories. [Browse the rubber & chemical hub](/industry/rubber-chemicals) or [post an RFQ](/rfq/post) to match a factory to your spec.

Sourcing & Support - Customization supported: size, color, packaging and certification can be customized to drawings; MOQ is subject to the supplier. - Data shown: market figures are from public industry research (2025 global rubber market ≈ USD 382 billion; China consumption >11 million tonnes). Platform live inventory: 251 products / 42 categories (as of 2026-10). - For reference of current stock only: the parameters above are general industry ranges; final specs are subject to actual inventory and the quotation sheet. - For specific details, contact our team: specs, lead time, MOQ, certification files, etc. — please [submit an RFQ](/rfq/post) or contact our online support directly.

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