oil&heat-resistance-comparison-chart

Oil & Heat Resistance Comparison Chart — with operating temperature (°C) on the vertical axis and volume swell rate (%) in ASTM No. 3 oil on the horizontal axis; further right indicates better oil resistance, further up indicates higher heat resistance; plotting the performance positions of 16 rubber materials: FKM, Fluorosilicone (FVMQ), Silicone (VMQ), HNBR, ACM, AEM, ECO, HBR/XNBR, EPDM, IIR, SBR/NR, CR, EU, and AU

Oil & Heat Resistance Comparison Chart — with operating temperature (°C) on the vertical axis and volume swell rate (%) in ASTM No. 3 oil on the horizontal axis; further right indicates better oil resistance, further up indicates higher heat resistance; plotting the performance positions of 16 rubber materials: FKM, Fluorosilicone (FVMQ), Silicone (VMQ), HNBR, ACM, AEM, ECO, HBR/XNBR, EPDM, IIR, SBR/NR, CR, EU, and AU

oil&heat-resistance-comparison-chart

High Temperature or Oil Resistance? Choose the Wrong Dimension, and Your Seal Fails in the Right Environment

Oil and Heat Resistance at a Glance — One Scatter Chart to Intuitively Position the True Performance Range of 16 Rubber Materials
The most common mistake in material selection: focusing only on heat resistance while overlooking oil resistance, or confirming the media while ignoring temperature. NIYOK plots 16 mainstream rubber materials on a single scatter chart — with ASTM No. 3 oil volume swell rate on the horizontal axis and operating temperature on the vertical axis — so the two-dimensional difference between oil and heat resistance is immediately clear, enabling more precise application matching and eliminating unnecessary detours in material selection.


Dual-Axis Matching for Oil × Heat Resistance — Master the Performance Distribution of 16 Rubber Materials in One Chart

Many seal failures occur under seemingly normal operating conditions. The engine bay runs a few degrees hotter than expected. The hydraulic system switches to a new fluid. Outdoor equipment starts leaking after summer heat exposure. Behind these problems, there is usually just one cause: the material selected at the time did not truly correspond to the actual conditions of use.
This scatter chart plots 16 materials — FKM, Fluorosilicone (FVMQ), Silicone (VMQ), HNBR, ACM, AEM, ECO, HBR/XNBR, EPDM, IIR, SBR/NR, CR, EU, and AU — using volume swell rate in ASTM No. 3 oil on the horizontal axis against operating temperature on the vertical axis. Further right means better oil resistance; further up means higher heat resistance, allowing cross-dimensional material comparisons without relying on guesswork.
There is no universal answer to material selection — only whether it fits your operating conditions. NIYOK's R&D and quality assurance teams have extensive experience supporting a wide range of industrial and custom projects, from clarifying operating conditions and recommending materials through sample validation and full mass production — with particular expertise in complex, difficult cases where previous attempts have fallen short.

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NIYOK oil&heat-resistance-comparison-chart Introduction

Based in Taiwan, NIYOK SEALING PARTS CO., LTD. is a seal and rubber products supplier and manufacturer in the Seal Industry.

NIYOK is a leading seal and oil seal manufacturing expert, with a professional design and manufacturing team to provide high-quality oil seal products for all industrial and automotive applications. From oil seals, O-rings, to gaskets, and customized products, application industries include manufacturing, chemical processing, defense, water treatment and filtration, hydraulics, fluid power, heavy trucks, automobiles, aerospace, oil and gas, medical and For life sciences, food and beverages, a complete product line is available for customer needs and specifications.

NIYOK has been offering customers high-quality Oil Seal, Seal, Rubber Parts, Gasket, O-Ring since 1983, both with advanced technology and 40 years of experience, NIYOK ensures each customer's demands are met.