IRHD Hardness Testers

IRHD hardness testers measure the hardness of cured rubber to ISO 48 using a precision indenter and dead-load system, with micro, normal and low-hardness variants for different sample sizes and ranges. They are the instrument of choice for thin sections, curved surfaces and small parts such as seals and O-rings.

Read how the method works in IRHD Measurement Principles, or match a tester to your samples with the Select an IRHD Hardness Tester guide.

IRHD Micro IRHD Hardness tester

High-end Micro IRHD hardness tester for thin materials
Measures the thickness of elastomers and O-rings with 1-5 mm thickness
Automatic process control eliminates operator errors

Macro IRHD Durometer hardness system with different inserts

Hardness tester with different inserts
Automatic operation eliminates manual errors
For specimens thicker than 6 mm IRHD

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