ASKER Durometer Type CSC2

The ASKER Durometer Type CSC2 for ultra soft (low hardness) and spongy surface materials than those covered by the measuring scope of ASKER Type C and C2, such as soft rubbers, rubber rolls, etc.

It is suitable for foam materials such as soft sponges, plastic foams, etc as the cylindrical indentor presses the specimen across the extended surface.





Height: 2.54mm Shape: Cylindrical

Pressure foot


A 50mm diameter pressure foot in contact with a specimen, is wide enough to offer stable measurement.

Hardness Tester Selection Chart

Hardness Tester Selection Chart

Our product line consists of various types of durometers applicable to specific materials as indicated in the chart above.

Type A Durometer (ASKER A type), conforming to JIS K 6253-3 is the most popular type of durometer for measuring rubber hardness.

However, verification is recommended because a significant difference is estimated to be the largest when a durometer indicates measurement values from 10 to 90 points.

For hard specimens for which Type A Durometer readings indicate more than 90 points, measurements should be undertaken using the Type D Durometer (ASKER D type). However, for soft specimens with measurements of less than 20 points, the ASKER C type or Type E Durometer (ASKER E type) should be used. The most important consideration in using durometers is to select the correct type for purposes of measurement according to the specimen.


Indication range
0 point - 100 point (262 degree dial scale)
Minimum indication
1 point (Accuracy : ±1 point)
Indentor Design (mm)
Height: 2.54 10 Dia. Cylindrical
Spring Forces [mN(g)]
0 point:
100 point:
Central hole of diameter of Pressure foot
Pressure foot Dimension (mm)
Φ50(Round shape)
Outer Dimension (mm)
Approx. Width 50×Depth 50×Height 76
Weight (g)
Soft sponges, Plastic foams, Wet suit



Two-pointer type (max-hand and active hand) of Rubber Hardness Tester

The stationary set hand (max-hand) makes the maximum value easier to read and allows the creep characteristics of a specimen.

Accurate measurement is made possible for specimens* for which stress relaxation occurs over time or for specimens for which it is difficult to take readings from the front.

*Materials for which the reading decreases immediately after the indentor has been pressed against the surface.


Indentor Extension Tester

  • The gauge to check the indentor height on a durometer and the reading indicator mechanism.
  • Inspection is conducted at 2, 50, and 100 points respectively.