ISO 7619-2

Introducing ISO 7619‑2 – Industrial Physics

ISO 7619‑2 is the international standard for determining the indentation hardness of vulcanized or thermoplastic rubber using the IRHD pocket meter method. This portable, precise hardness‑measurement technique is widely used for on‑site testing, production control, and laboratory evaluation of rubber components across automotive, industrial, and consumer‑goods applications.

The method provides a reliable way to quantify rubber hardness using a calibrated pocket‑sized IRHD meter, ensuring consistent results across operators and environments.

What ISO 7619‑2 Covers

ISO 7619‑2 defines a standardized procedure for measuring International Rubber Hardness Degrees (IRHD) using a compact, calibrated pocket hardness meter. Key elements include:

• Using an IRHD pocket hardness meter with defined geometry and spring force
• Measuring indentation hardness on vulcanized or thermoplastic rubber
• Ensuring test pieces meet thickness and surface‑quality requirements
• Conditioning samples at controlled temperature
• Taking multiple measurements for repeatability
• Calibrating and checking the instrument regularly

The method applies to:

• Vulcanized rubber
• Thermoplastic elastomers
• Rubber components used in seals, gaskets, bushings, mounts, and molded parts

ISO 7619‑2 is especially useful for field testing or production‑line checks where a benchtop durometer is impractical.

Where ISO 7619‑2 Is Used

This standard is widely used across industries that rely on elastomer performance:

• Automotive and transportation
• Industrial machinery and equipment
• Consumer products
• Rubber manufacturing and compounding
• Quality‑control laboratories
• Incoming‑material inspection

It supports both routine hardness verification and comparative evaluation of rubber formulations.

Why Hardness Testing Matters

Indentation hardness is essential for:

• Ensuring material consistency across batches
• Predicting performance under load, compression, and deformation
• Validating rubber formulation and curing conditions
• Meeting OEM and industry specifications
• Preventing premature failure in seals, mounts, and dynamic components

IRHD hardness is often used alongside tensile, compression set, and aging tests to build a complete elastomer‑performance profile.

Testing solutions for ISO 7619‑2

Three products from the Featured Products section align with ISO 7619‑2’s focus on rubber hardness and elastomer‑performance evaluation:

TQC Sheen Shore Hardness Tester

A precise, easy‑to‑use handheld durometer designed for measuring the hardness of rubber, elastomers, and soft plastics. This gauge provides fast, reliable hardness readings that complement IRHD pocket‑meter testing, making it ideal for production checks, incoming‑material inspection, and laboratory evaluation.

PosiTest PC Powder Checker

Fast, non‑contact powder‑coating thickness measurement

The PosiTest PC Powder Checker is a portable, non‑contact gauge designed to measure uncured powder‑coating thickness before the part enters the oven. This allows operators to adjust application settings in real time, reduce rework, and ensure consistent cured‑film thickness across production.

Built for busy powder‑coating lines, the PosiTest PC delivers quick, repeatable measurements on a wide range of metal substrates — helping manufacturers hit specification targets and minimise material waste.

PosiTector Ultrasonic Wall Thickness Gauge

Accurate, non‑destructive thickness measurement for metals, plastics, and composites

The PosiTector Ultrasonic Wall Thickness Gauge is a versatile, high‑precision instrument designed for non‑destructive measurement of wall thickness in materials where access is limited to one side. Using advanced ultrasonic pulse‑echo technology, it delivers fast, reliable readings on metals, plastics, composites, and other engineering materials — making it ideal for inspection, maintenance, and quality‑control applications.

Built for demanding industrial environments, the gauge combines rugged construction with intuitive operation, ensuring dependable performance whether you’re in the lab, on the production floor, or out in the field.

Your Global Test and Measurement Partner for ISO 7619‑2

Industrial Physics supports rubber manufacturers, automotive suppliers, and industrial‑materials labs with the tools and expertise needed to evaluate elastomer performance in line with ISO 7619‑2. From hardness testing to abrasion, flexibility, and aging analysis, we help ensure your materials meet demanding performance and durability standards.