Product Description

Rex® offers the Type JA and Type JC. These durometers meet JIS K6253 / K6301, the Japanese Industrial Standards for durometer hardness. The JIS types are becoming less widely used since the ASTM D2240 was standardized in the ISO, but are still popular among Japanese companies with operations in the Americas.

The Type JA is suited for the hardness measurement of a wide range of materials, from harder elastomers to softer plastics. Although the spring force of a “JA” is slightly more than that of of a ASTM D2240 Type A, most test results are very similar.

The Type JC is employed in the measurement of materials with a hardness greater than 70 JA. Incorporating an “JA” style indentor and a 4500 gf spring, it is designed for the hardness measurement of a wide range of materials, from rigid elastomers to harder plastics. Please note that although the spring force of a “JC” is slightly less than that of a ASTM D2240 Type C, most test results are very similar.

The Rex® Asker Type F is designed to test soft cellular materials. The very large diameter presser foot (80 mm Ø) and cylindrical indentor configuration allow measurement by direct application to the test specimen. It is important to note the differences between the JIS Type C and the Asker Type C.

The Rex® JIS / Asker Type Features:

  • Conformance to JIS and Asker specifications;
  • Available in analog and digital models;
  • Custom made storage case;
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