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Harwood rubber Products Inc. - top quality industrial rubber rolls, printing rolls and a variety of custom rubber productsRubber Coverings, Molded Parts, Custom Grinding and Specialty Rubber Fabrication
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MATERIALS / REFERENCE CHART

Mixing MillOur customers benefit from our 40 (+) years experience in the rubber industry. Our custom compounds have been developed by our staff and proven in countless service applications. Continual material development keeps us in the forefront of material performance.

We have many durometers, colors and compound alternatives to meet your requirements; or we can formulate new or adjust an existing stock to specifically fit your application, without a lot of development costs.
Natural Rubber
Neoprene
Silicone
Hypalon
Viton
EPDM
ECH
SBR
XNBR
HNBR
Materials
Butyl
Ebonite
Sponge grades
Static conductive
Thermal conductive
Dual durometer
constructions
MSHA
FDA
ASTM

REFRENCE CHART

General Reference Chart of materials available, their respective hardness range and temperature capacity:

MATERIAL
TEMPERATURE
(Fahrenheit)

HARDNESS
(SH. “A” Durometer)
Butyl (IIR)
212
50-75
Epichlorohydrin (CO/ECO)
275
45-75
Ethylene Propylene (EPDM/EPT)
350
35-90
Neoprene (CR)
250
20-95
Nitrile (NBR)
250
20-100
Carboxylated Nitrile (XNBR)
275
50-95
Hydrogenated Nitrile (HNBR)
300
(Interm. to 400)
60-90
Isoprene/Natural (IR/NR)
190
35-100
Styrene Butadiene (SBR)
200
45-90
Silicone (SI)
450
25-85
Viton (FPM)
475
60-85
Hypalon (CSM)
275
45-90
Urethane (AU/EU)
180
35-100


The above temperature ratings are for general reference only and may vary from compound to compound.  Factors such as material hardness, formulation, chemical environment, working load, size tolerance (stability), etc. may affect individual materials differently.  Accordingly, specific requirements should be addressed as such.

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