ISO 7619-1

Introducing ISO 7619‑1 – Industrial Physics

ISO 7619‑1 is the international standard for determining the indentation hardness of vulcanized or thermoplastic rubber using the durometer (Shore hardness) method. This test provides a fast, reliable way to quantify rubber hardness across a wide range of elastomer types, supporting quality control, material selection, and performance verification in industries where rubber components must meet strict mechanical requirements.

The method covers multiple Shore scales — including A, D, AO, and AM — ensuring accurate hardness measurement for soft, medium, hard, cellular, and thin rubber materials.

What ISO 7619‑1 Covers

ISO 7619‑1 defines a standardized procedure for measuring Shore hardness using calibrated durometers. Key elements include:

• Using durometers with defined indenter geometry, spring force, and measurement scales

Applying the correct Shore scale:

• A for normal‑hardness rubber
• D for high‑hardness rubber
• AO for low‑hardness and cellular rubber
• AM for thin rubber test pieces

• Conditioning samples at controlled temperature
• Ensuring minimum sample thickness and flatness
• Taking multiple readings for repeatability
• Reporting hardness in Shore units

The method applies to:

• Vulcanized rubber
• Thermoplastic elastomers
• Cellular rubber
• Thin rubber test pieces
• Molded parts, seals, gaskets, bushings, and industrial rubber components

ISO 7619‑1 ensures consistent hardness measurement across laboratories, production lines, and field environments.

Where ISO 7619‑1 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

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

Testing solutions for ISO 7619‑1

Three products from the Featured Products section align with ISO 7619‑1’s focus on rubber hardness, material evaluation, and non‑destructive measurement:

Shore Hardness Gauge / Durometer

A precise, easy‑to‑use handheld durometer designed specifically for measuring the hardness of rubber, elastomers, and soft plastics. It supports multiple Shore scales and provides fast, repeatable hardness readings fully aligned with ISO 7619‑1 requirements.

PosiTest PC Powder Checker

A non‑contact thickness‑measurement device ideal for verifying uncured powder‑coating thickness on metal substrates. While not a hardness tester, it complements elastomer‑testing workflows by supporting coating‑thickness control for rubber‑coated or elastomer‑bonded components.

PosiTector Ultrasonic Wall Thickness Gauge

A rugged, high‑precision ultrasonic gauge for non‑destructive wall‑thickness measurement of metals, plastics, and composites. This instrument is frequently used alongside rubber‑hardness testing to evaluate elastomer‑coated components, bonded assemblies, and structural substrates.

Your Global Test and Measurement Partner for ISO 7619‑1

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 7619‑1. From Shore hardness testing to thickness, abrasion, and deformation analysis, we help ensure your materials meet demanding performance and durability standards.