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PTC® Durometer Application Guide
This selection guide is designed as a general overview of the many durometer styles, types, spring force ranges, and indentor configurations. PTC® 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.
The text link in the ‘Model’ column of the table below will display the current information for the respective durometer.
It is also highly recommended that, whenever possible, an operating stand be employed in performing durometer hardness tests. Please visit the PTC® Operating Stand WebPage to select a suitable Operating Stand for your application.
Type Application Model Description Main Spring (gf) Indentor Geometry
A Rubber:
Soft vulcanized, natural, nitrile

Elastomeric Materials:
neoprene, thiokol, flexible polyacrylic esters

Other:
Wax, felt, leather, etc.

201
211
306L
408
501A
511A
Analog Pencil
Digital Pencil
Classic Style
Ergo Style
Analog e2000
Digital e2000
821
821
821
821
821
821

35º Cut Cone
JIS A JIS A Classic Style 855
B Rubber:
Moderately Hard
(typewriter rollers, platens)
201B
211B
306BL
408B
501B
511B
Analog Pencil
Digital Pencil
Classic Style
Ergo Style
Analog e2000
Digital e2000
821
821
821
821
821
821

30º Cone
C Rubber:
Medium Hard

Plastics:
Medium Hard

202C
212C
307CL
409
502C
512C
Analog Pencil
Digital Pencil
Classic Style
Ergo Style
Analog e2000
Digital e2000
4536
4536
4536
4536
4536
4536

35º Cut Cone
JIS C JIS C Classic Style 4500
D Rubber:
Hard

Plastics:
Harder grades;
Rigid Thermoplastics

202
212
307L
409
502D
512D
Analog Pencil
Digital Pencil
Classic Style
Ergo Style
Analog e2000
Digital e2000
4536
4536
4536
4536
4536
4536

30º Cone
DO Textile Windings:
Very Dense
(slasher beams, etc.)
202DO
212DO
413
502DO
512DO
Analog Pencil
Digital Pencil
Ergo Style
Analog e2000
Digital e2000
4536
4536
4536
4536
4536

3/32” Sphere
O Rubber:
Soft

Textile Windings:
Medium Density

201O
211O
410
501O
511O
Analog Pencil
Digital Pencil
Ergo Style
Analog e2000
Digital e2000
821
821
821
821
821

3/32” Sphere
OO Rubber:
Sponge

Textile Windings:
Low Density

203
411
Analog Pencil
Ergo Style
113
113

3/32” Sphere
OOO Plastic:
Foams

Rubber:
Sponge

412
Classic Style
113

1/4” Sphere
SL Plastic:
Foams

Rubber:
Sponge

302SL
Classic Style
142

11.3 mm Ø
CF Plastic:
Foams

Rubber:
Sponge

414CF
Classic Style
9072

1/4” Sphere
Asker C Plastic:
Foams

Rubber:
Sponge

Asker C
Classic Style
855

5.08 mm Sphere

Index Terms: PTC Durometer, PTC 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, 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
www.ccsi-inc.com www.orecozone.net