Rubber isn’t just chosen by feel.
It’s measured.
Tested.
Engineered.

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Because when rubber seals pressure, cushions vibration or survives heat and stress, performance can’t be left to guesswork. It has to be proven, with data.

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Engineers rely on key properties to predict how rubber will behave in the real world.

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Hardness is the starting point. It tells us how firm the rubber is, how much it resists indentation. Measured with a durometer, most rubber compounds fall between 40 and 90 on the Shore A scale. Soft like an eraser or firm like a tire tread.

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Elongation measures flexibility, how far a sample can stretch before it breaks. Natural rubber can stretch beyond 700%. High-performance rubbers like FKM stretch far less but gain dimensional stability in return.

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Compression set evaluates memory: if a gasket is squeezed for months, will it spring back and keep sealing? In testing, samples are compressed, exposed to heat and measured for recovery. A low compression set means reliable, long-term sealing.

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We also test tensile strength, which tells us how much force is required to break the rubber, tear resistance, which shows how cracks initiate and grow under stress, rebound, which measures how much energy the material returns after deformation and specific gravity, which reflects density and gives insight into formulation and filler content.

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These numbers aren’t just technical specs.

They determine whether a seal leaks, whether a mount fails, whether a system survives.

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To make results meaningful and comparable, these properties are measured using globally recognized test methods and controlled laboratory procedures. They create a shared technical language, one that connects material developers, manufacturers and engineers across industries.

Because in rubber, performance isn’t just designed. It’s measured.

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And when the pressure’s on, measurement makes the difference.