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Rex® Durometer Application Guide
This selection guide is designed as a general overview of the many durometer styles, types, spring force ranges, and indentor configurations. Rex® Gauge Company
It may assist in choosing the proper durometer for a particular application, however, it is not to be considered a definitive technical document.
The text link in the ‘Model’ column of the table below will display the current information for the respective durometer. The color of Rex® durometers indicates their respective type (scales), Type O for example, indicates ASTM D—2240 Type O.
It is also highly recommended that, whenever possible, an operating stand be employed in performing durometer hardness tests. Please visit the Rex® Operating Stand WebPage to select a suitable Operating Stand for your application.
ASTM Type Application Model Description Spring (gf) Indentor Geometry
A
A scale
Rubber:
Soft vulcanized, natural, nitrile

Elastomeric Materials:
neoprene, thiokol, flexible polyacrylic esters

Other:
Wax, felt, leather, etc.
DD—3 Digital 822
35º Truncated Cone
MS—1 Multi—Scale
H1000 Mini—Dial
1500 Vernier Scale
1600 Standard Dial
1700 Max Hand
2000 Max Hand
2100 Tires Only
B
B scale
Rubber:
Moderately Hard
(typewriter rollers, platens)
DD—3 Digital 4536
30º Cone
MS—1 Multi—Scale
H1000 Mini—Dial
1500 Vernier Scale
1600 Standard Dial
1700 Max Hand
2000 Max Hand
C
C scale
Rubber:
Medium Hard

Plastics:
Medium Hard
DD—3 Digital 4536
35º Truncated Cone
MS—1 Multi—Scale
H1000 Mini—Dial
1500 Vernier Scale
1600 Standard Dial
1700 Max Hand
2000 Max Hand
D
D scale
Rubber:
Hard

Plastics:
Harder grades;
Rigid Thermoplastics
DD—3 Digital 4536
30º Cone
MS—1 Multi—Scale
H1000 Mini—Dial
1500 Vernier Scale
1600 Standard Dial
1700 Max Hand
2000 Max Hand
DO
DO scale
Textile Windings:
Very Dense
(slasher beams, etc.)
DD—3 Digital 4536
3/32” Sphere
MS—1 Multi—Scale
H1000 Mini—Dial
1500 Vernier Scale
1600 Standard Dial
1700 Max Hand
2000 Max Hand
O
O scale
Rubber:
Soft

Textile Windings:
Medium Density
DD—3 Digital 822
3/32” Sphere
MS—1 Multi—Scale
H1000 Mini—Dial
1500 Vernier Scale
1600 Standard Dial
1700 Max Hand
2000 Max Hand
OO
OO scale
Rubber:
Sponge

Textile Windings:
Low Density
DD—3 Digital 113
3/32” Sphere
MS—1 Multi—Scale
1600 Standard Dial
OOO
OOO scale
Rubber:
Sponge

Plastic:
Foams
DD—3 Digital 113
1/2” Sphere
1600 Standard Dial
M
MA scale
Rubber:
Soft vulcanized, natural, nitrile

Elastomeric Materials:
neoprene, thiokol, flexible polyacrylic esters

Other:
Small irregular shapes 1.25 mm+ thick
DD—3 Digital 78
30º Cone
1600 Standard Dial
Please visit the individual Rex® Durometer pages for complete product descriptions, specifications and pricing information.

Index Terms: Rex Durometer, Rex Durometers, 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, JIS K6253, JIS K6251, JIS K6252, JIS K 6253, JIS K6254, JIS K6255, JIS K6256, JIS K6257, JIS K6258, JIS K6259, JIS K6260, DIN 53505, DIN 53 505, CNS, K6898, BS 903, BS 2782, BS ISO 21509, BS EN ISO 868, GB/T 10807, Asker, Asker C, SRIS0101, MIL-STD-45622A, MIL-I-45208A, MIL-STD-120, 83.060, 83.080.01, 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
www.ccsi-inc.com www.orecozone.net