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Raw Rubber Characteristics List

Understanding the characteristics of raw materials

Use this list to compare the characteristics of each type of raw rubber. Raw rubbers can be combined and additives also mixed to supplement the weak characteristics of rubbers.

(Yoshinobu Miyahara, Miyahara Rubber Industry Co., Ltd.)

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Raw Rubber Characteristics List PDF [568KB]


A=Superior  B=Good  C=Possible  X=Not possible

Type
(code)
Natural rubber
(NR)
Styrene rubber
(SBR)
Butadiene rubber
(BR)
Isobutylene-isoprene rubber
(IIR)
Chloroprene rubber
(CR)
Specific gravity (raw material)0.920.940.920.921.23
Repulsion elasticityABACA
Tear strengthACBBB
Wear resistanceAAABB
Flexure and crack resistanceABCAB
Heat resistance
(maximum temperature ℃)
120120120150150
Cold resistance(low temperature embrittlement temperature℃)-60-60-73-55-55
Aging resistanceCCBAA
Ozone resistanceXXXAA
Flame resistanceXXXXB
Gas permeability resistanceBBBAB
Radiation resistanceCCXXC
【Aciduric】Organic acidXXXBC
【Aciduric】Strong acidCCCAB
【Aciduric】Weak acidBBBAA
Alkalinity resistanceBBBAA
【Oil resistance
and solvent resistance】Gasoline
XXXXB
【Oil resistance
and solvent resistance】Benzene
XXXXX
【Oil resistance
and solvent resistance】Ketone
CCCAC
【Oil resistance
and solvent resistance】Alcohol
AAAAA
【Oil resistance
and solvent resistance】Triclene
XXXXX

Type
(code)
Nitrile rubber
(NBR)
Ethylene propylene rubber
(EPDM)
Hypalon
(CSM)
Silicon rubber
(SI)
Specific gravity (raw material)10.861.180.96
Repulsion elasticityBBBA
Tear strengthBCB×
Wear resistanceABAC
Flexure and crack resistanceBBBC
Heat resistance
(maximum temperature ℃)
160150150280
Cold resistance(low temperature embrittlement temperature℃)-40-60-60-120
Aging resistanceBAAA
Ozone resistanceXAAA
Flame resistanceXXBC
Gas permeability resistanceBBB
Radiation resistanceCXCC
【Aciduric】Organic acidCXCB
【Aciduric】Strong acidBBAC
【Aciduric】Weak acidBBAB
Alkalinity resistanceBBAA
【Oil resistance
and solvent resistance】Gasoline
AXCC
【Oil resistance
and solvent resistance】Benzene
CCCC
【Oil resistance
and solvent resistance】Ketone
XACB
【Oil resistance
and solvent resistance】Alcohol
AAAA
【Oil resistance
and solvent resistance】Triclene
XXXX

Type
(code)
Fluorine rubber
(FPM)
Polysulfide rubber
(T)
Polyurethane rubber
(U)
Acrylic rubber
(ACM)
Specific gravity (raw material)1.841.341.21.09
Repulsion elasticityCCAC
Tear strengthCCAC
Wear resistanceACAB
Flexure and crack resistanceBXAB
Heat resistance
(maximum temperature ℃)
3008080180
Cold resistance(low temperature embrittlement temperature℃)-50-40-60-30
Aging resistanceABBA
Ozone resistanceAAAA
Flame resistanceAXXX
Gas permeability resistanceAABB
Radiation resistanceCCB×
【Aciduric】Organic acidXXXX
【Aciduric】Strong acidAXXC
【Aciduric】Weak acidACCB
Alkalinity resistanceXCXC
【Oil resistance
and solvent resistance】Gasoline
AAAA
【Oil resistance
and solvent resistance】Benzene
AACX
【Oil resistance
and solvent resistance】Ketone
XAXX
【Oil resistance
and solvent resistance】Alcohol
AACX
【Oil resistance
and solvent resistance】Triclene
BCCX

The above table indicates common qualities of natural rubber and synthetic rubbers, however, the quality of some types and compounds of raw materials may differ.

[ In File Download, click Save. ]
Raw Rubber Characteristics List PDF [568KB]

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