Product Description

This selection guide is designed as a general overview of the many durometer styles, types, spring force ranges, and indentor configurations.

It may assist in choosing the proper durometer for a particular application, however, it is not to be considered a definitive technical document.

It is also highly recommended that, whenever possible, an operating stand be employed in performing durometer hardness tests.

Rex Operating Stands:

Rex OS-1 | Rex OS-2 | Rex OS-2H | Rex OS-3 | Rex OS-4 | Rex OS-4H

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Application Guide Fill 118 Copy 1 Created with Sketch.
ASTM TypeApplication ModelSpring (gf) Indentor Geometry
ARubber: Soft vulcanized, natural, nitrile | Elastomeric Materials: neoprene, thiokol, flexible polyacrylic esters | Other: Wax, felt, leather, etc.DD-4 | DD-5 | 3000 | 4000 | 5000 | H-1000 | 1500 | 1600 | 2000 | 2100822 35º Truncated Cone
BRubber: Moderately Hard (typewriter rollers, platens)DD-4 | DD-5 | H-1000 | 1500 | 1600 | 2000453630º Cone
CRubber: Medium Hard | Plastics: Medium HardDD-4 | DD-5 | H-1000 | 1500 | 1600 | 20004536 35º Truncated Cone
DRubber: Hard | Plastics: Harder grades; Rigid ThermoplasticsDD-4 | DD-5 | 3000 | 4000 | 5000 | H-1000 | 1500 | 1600 | 20004536 30º Cone
ESoft RubberDD-4 | DD-5 | H-1000 | 16008222.5mm spherical
DOTextile Windings: Very Dense (slasher beams, etc.)DD-4 | DD-5 | H-1000 | 1500 | 1600 | 20004536 3/32” Sphere
ORubber: Soft | Textile Windings: Medium DensityDD-4 | DD-5 | H-1000 | 1500 | 1600 | 20008223/32” Sphere
OORubber: Sponge | Textile Windings: Low DensityDD-4 | DD-5 | 1600113 3/32” Sphere
OOORubber: Sponge | Plastic: FoamsDD-4 | DD-5 | 1600113 1/2” Sphere
OOO-SRubber: Sponge | Plastic:DD-4 | DD-5 | 16001131/2” Sphere
MRubber: Soft vulcanized, natural, nitrile | Elastomeric Materials: neoprene, thiokol, flexible polyacrylic esters | Other: Small irregular shapes 1.25 mm+ thick DD-4 | DD-5 | 16007830º Cone
ASKER CRubber: Soft vulcanized, natural, nitrile | Elastomeric Materials: neoprene, thiokol, flexible polyacrylic esters | Other: Wax, felt, leather, etc.DD-4 | DD-5 | 16008552.54mm spherical

Index Terms: Fill 118 Copy 1 Created with Sketch.

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.