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Asker® Durometer Specifications and Selection Guide
This selection guide is designed as a general overview of the many Asker® Durometer styles, types, spring force ranges, and indentor configurations. Asker® Instruments
It may assist in choosing the proper durometer for a particular application, however, it is not to be considered a definitive technical document.
Questions regarding specific testing requirements requiring detailed technical information, are freely answered as a service to our customers.
Asker® Durometers
Dimensions expressed in millimeters (mm). Force expressed in grams (gf).
The “Model” column contains a link to the individual page for the listed Asker® Durometer.
Model Image Standard Indentor Spring Force
Presser Foot Dimensions
JA1 Asker® Durometer Model JA JIS K 6253 35º
Frustrum Cone
0.79 R tip
1.27 Ø
55 - 855 44 x 18
Width 57
Depth 30
Height 76
JC1 Asker® Durometer Model JC JIS K 6253 100 - 4500
A1 Asker® Durometer Type A JIS K 6253
JIS K 7215
ASTM D2240
ISO 7619
ISO 868
56 - 821
D1 Asker® Durometer Type D JIS K6253
JIS K 7215
ASTM D2240
ISO 7619
ISO 868
0.10 R tip
1.27 Ø
0 - 4533
B1 Asker® Durometer Type B ASTM D2240 56 - 821
C1 Asker® Types C and C2 SRIS 0101
5.08 Ø
55 - 855
C21 ASKER C2 55 - 455
DD—2 Asker® Digital Model DD-2 1 Indicates availability in the Digital Model DD—2
CS Asker® Type CS ASKER CS 10 Ø Cylinder 100 - 4500 50 Ø Circular Width 50
Depth 50
Height 76
FP Asker® Types F and FP ASKER FP 15 Ø Cylinder 100 - 200 50 x 37 Oval Width 50
Depth 37
Height 81
F ASKER F 25.2 Ø Cylinder 55 - 455 80 Ø Circular Width 80
Depth 80
Height 81
Asker® Indentor Designs
Asker® Indentor: 30º Cone 30° Cone Types B and D
Hard Rubber and Plastics
Asker® Indentor: 35º Truncated Cone Truncated (Frustrum) 35° Cone Types A, C, JA and JC
Soft Rubber and Plastics
Asker® Indentor: Spherical 5.08 mm Ø Sphere Asker Types C and C2
Softer Rubber & Sponge
Asker® Indentor: Cylindrical 10, 15 & 25.2 mm Ø Cylinder Asker Types F, FP and CS
Urethanes & Foams
Asker® Extended Presser Foot Designs
Asker® Extended Presser Foot 10 mm Ø Types JAL and JCL
12 mm Ø Types AL, DL and BL
16 mm Ø Models C1L and C2L
Asker® Maximum Reading Hand Design
Asker® Maximum Reading Hand Feature The Maximum Indicating Hand allows for the retention of the maximum indicated reading. This is especially useful with materials that exhibit rapid hysteresis, dynamic stress relaxation, or when it is difficult to instantaneously observe the reading without introducing focal parallax.

Index Terms: Asker Durometers, Asker Durometer, Asker Durometer Selection Guide, Asker F, Asker FP, Asker C, Asker C2, Asker CS, Asker, Shore hardness, pocket durometer, Shore scale, hardness, rubber hardness, plastic, plastic hardness, indentation hardness, ebonite, ebonite hardness, rubber hardness testing, rubber testing, hardness testing, durometer hardness, testing, ASTM D2240, D2240, ASTM D1957, ISO 868, ISO 7619, ISO 8517, ISO 7267, ISO 21509, ISO 18517, JIS K6253, JIS K6251, JIS K6252, JIS K 6253, JIS K6254, JIS K6255, JIS K6256, JIS K6257, JIS K6258, JIS K6259, JIS K6260, JIS K7215, DIN 53505, DIN 53 505, CNS, K6898, BS 903, BS 2782, BS ISO 21509, BS EN ISO 868, GB/T 10807, Asker, Asker C, SRIS 0101, MIL-STD-45622A, MIL-I-45208A, MIL-STD-120, 83.060, 83.080, hysteresis, creep, Young's Modulus.
Copyright © 2006 CCSi, Inc. • All Rights Reserved • Published August, 2006
Corporate Consulting, Service & Instruments, Incorporated
221 Beaver Street • Akron, Ohio 44304 USA
Telephone: 800.742.8535 / 330.376.3600 • Facsimile: 800.229.9329 / 330.376.8500