Natural hard rubber (NHR)

Our rubber materials use for application has imported from OHJI (Japan) manufacture. We provide rubber sheet, adhesive, materials and the supervisor which will be best suited for your needs.

SKU: NHR001 Categories: ,

Characteristics of Natural Hard Rubber (NHR)

Hard Rubber
Weather 
Heat  O
Low Temperature  x
Acid 
Alkali 
Abrasion x
Vapor Permeability 
Shock  x


Excellent

O
Good


Not Good

X
Bad

Chemical Resistance of Rubber Lining

Chemical resistance are determined according to test results and actual long-term performance. And accurate material selection requires careful consideration in terms of operating conditions and specifications of equipment.

Therefore, please consult with us in advance for selection of rubber material against your chemical.

Inorganic Acids

Chemical Formula Conc. (%) Hard Rubber
E-7
RT 90°C
Sulfuric Acid H2SO4 10  O   O 
Sulfuric Acid H2SO4 30  O   O 
Sulfuric Acid  H2SO4 50  O   O 
Sulfuric Acid  H2SO4 70  O  X
Hydrochloric Acid HCl 10  O   O 
Hydrochloric Acid HCl 35  O   O 
Nitric Acid HNO3 1 X X
Sulfurous Acid H2SO3 0.5  O   O 
Phosphoric Acid H3PO4  O   O 
Hydrofluoric Acid HF 1  O   O 
Hydrofluoric Acid HF 48  X 
Carbonic Acid H2CO3 O O
Chlorine Water Cl2 satu O
Chlorine Gas Cl2 wet O O
Hydrobromic Acid HBr 40 O O
Hydrogen Sulfid Water H2S O O
Chromic Acid H2CrO4 1  X 

O: Satisfactory       ∆: Marginal       X: Unsatisfactory

Inorganic Alkalis
Chemical Formula  Conc. %) Hard Rubber
E-7
RT 90°C
Caustic Soda NaOH 48  O  O
Caustic Potash KOH 25  O  O
Aqua Ammonia NH4OH 28  O  ∆
O: Satisfactory       ∆: Marginal       X: Unsatisfactory
Inorganic Salts Solutions
Chemical Formula

Conc (%)

Hard Rubber

E-7

RT

90°C

Sodium Hypochlorite

NaClO

∆ 
Calcium Hypochlorite

Ca(ClO)2

 O   
Sodium Chlorate

NaClO3

 O   O 
Potassium Chlorate

KClO3

 O   O 
Sodium Chloride

NaCl

 O   O 
Calcium Chloride

CaCl2

 O   O 
Zinc Chloride

ZnCl2

 O   O 
Ammonium Chloride

NH4Cl

 O   O 
Sodium Sulfate

Na2SO4

 O   O 
Sodium Bicarbonate

NaHCO3

 O   O 
Potassium Bichromate

K2Cr2O7

 O   ∆
Sodium Sulfite

Na2SO3

 O   O 
Potassium Sulfite

K2SO3

 O   O 
Sodium Sulfide

Na2S

 O   O 
Potassium Sulfide

K2S

 O   O 
Sodium Thiosulfate

Na2S2O3

 O   O 
Sodium Phosphate

Na3PO4

 O   O 
Potassium Chloride

KCl

 O   O 
Ammonium Carbonate

(NH4)2CO3

 O   O 
Ferric Chloride

FeCl3

 O   O 
Ammonium Sulfate

(NH4)2SO4

 O   O 
Stannous Chloride

SnCl2

 O   O 
Chromium Chloride

CrCl2

 O   ∆ 
Nickel Sulfate

NiSO4

 O   O 
Silver Nitrate

AgNO3

 O   ∆ 
Aluminum Sulfate

Al2(SO4)3

 O   O 
Sodium Silicate

Na2O . SiO2

 O   O 
Sodium Aluminate

NaAlO2

 O   O 
Magnesium Hydroxide

Mg(OH)2

 O   O 
PAC

[Al2(OH)nCl6-n]m

 O   O 

O: Satisfactory       ∆: Marginal       X: Unsatisfactory

Organic Acids
Chemical

Formula

Conc. (%)

Hard Rubber

E-7

RT

90°C

Acetic Acid

CH3COOH

10

 O   O 
Glacial Acetic Acid

CH3COOH

10

 O   ∆ 
Formic Acid

HCOOH

90

 O   ∆ 
Oxalic Acid

(COOH)2

20

 O   O 
Butyric Acid

CH3CH2CH2COOH

100

 O   ∆ 
Tartaric Acid

(CH OH COOH)2

50

 O   O 
Lactic Acid

CH3CH(OH)COOH

25

 O   O 

O: Satisfactory       ∆: MarginalX: Unsatisfactory

Organic Compounds
Chemical

Formula

Conc. (%)

Hard Rubber

E-7

RT

90°C

Acetone

CH3COCH3

 ∆  ∆
Methanol

CH3OH

 O   O 
Ethanol

C2H5OH

 O   O 
n-Propylalcohol

C3H7OH

 O   O 
n-Butanol

C4H9OH

 O   ∆ 
Formaldehyde

HCHO

 O   O 
Glycerin

C3H5(OH)3

 O   O 
Ethylene Glycol

(CH2OH)2

 O   O 
Triethanolamine

N(CH2CH2OH)3

 O   O 
Glucose

C6H12O6

 O   O 

O: Satisfactory       ∆: MarginalX: Unsatisfactory

Description

Natural Hard Rubber (NHR)

Our rubber materials use for application has imported from OHJI (Japan) manufacture. We provide rubber sheet, adhesive, materials and the supervisor which will be best suited for your needs.

General Application Natural Hard Rubber (NHR)

Good for chemical resistance, vapor permeability and strong bonding strength achieve many application as main rubber lining material.

OHJI Material

Characteristics

General Application

Curing Method

Hardness

Autoclave

Open steam

OHJI E-5

Hard rubber used for chemical resistance under high temperature condition.

Less flexible than E-7.

Electrolytic equipment

Recovery system for hydrochloric acid and alcohol

Bromine production equipment

 

70 ~ 90

Type D

OHJI E-5i

Compound of low Ca and Mg.Special for Cell-liquor of IM electrolysis

 

60 ~ 80

Type D

OHJI E-7

[STANDARD]

Wide range of corrosion resistance.

Excellent flexibility.

Standard grade of natural hard rubber.

Hydrochloric acid, Dilute sulfuric acid, Phosphoric acid, Caustic soda, etc

 

65 ~ 85

Type D

OHJI E-7i

Compound of low Ca and Mg.

IM electrolysis

Used for the case of disrelishing metal ion

 

65 ~ 86

Type D

OHJI E-8

Used for oxide and osmotic agent, such as gaseous chlorine.For equipment for gaseous chlorine (wet) of electrolysis in saturated

 

70 ~ 90

Type D

OHJI E-15

General hard rubber for site application.

Used when the organic solvent such as SO is mixed

Same as E-7

 

60 ~ 80

Type D

OHJI E-16

Fast vulcanizing hard rubber.

Used as SH type (Soft-Hard-Soft lining).

Same as E-7

 

60 ~ 80

Type D

OHJI E-18

For gaseous chlorine for site application.Same as E-8

 

65 ~ 85

Type D

OHJI E-20

Hard rubber for site application.

Compound of low Ca and Mg.

Same as E-7i

 

60 ~ 80

Type D

* With regard to service condition, in the case of food-related, E-7 and E-15 are certified by the Japan Ministry of Welfare No.85.

OHJI rubber sheeting

● Accurate and uniform thickness

● No air pocket in sheet

● Better and longer corrosion perfomance

● Best sheet method rubber lining

Feature of rubber lining

● Chemical resistance

● Shocket restiance

● Abrasion restiance 

● Pressure restiance

● Elastricity

Advantage of rubber lining

● Reliable application

● Accurate lining thickness

● Excellence bonding

● Defect detection

● Able to maintenance

Characteristics of Natural Hard Rubber (NHR)

Hard Rubber
Weather 
Heat  O
Low Temperature  x
Acid 
Alkali 
Abrasion x
Vapor Permeability 
Shock  x


Excellent

O
Good


Not Good

X
Bad

Chemical Resistance of Rubber Lining

Chemical resistance are determined according to test results and actual long-term performance. And accurate material selection requires careful consideration in terms of operating conditions and specifications of equipment.

Therefore, please consult with us in advance for selection of rubber material against your chemical.

Inorganic Acids

Chemical Formula Conc. (%) Hard Rubber
E-7
RT 90°C
Sulfuric Acid H2SO4 10  O   O 
Sulfuric Acid H2SO4 30  O   O 
Sulfuric Acid  H2SO4 50  O   O 
Sulfuric Acid  H2SO4 70  O  X
Hydrochloric Acid HCl 10  O   O 
Hydrochloric Acid HCl 35  O   O 
Nitric Acid HNO3 1 X X
Sulfurous Acid H2SO3 0.5  O   O 
Phosphoric Acid H3PO4  O   O 
Hydrofluoric Acid HF 1  O   O 
Hydrofluoric Acid HF 48  X 
Carbonic Acid H2CO3 O O
Chlorine Water Cl2 satu O
Chlorine Gas Cl2 wet O O
Hydrobromic Acid HBr 40 O O
Hydrogen Sulfid Water H2S O O
Chromic Acid H2CrO4 1  X 

O: Satisfactory       ∆: Marginal       X: Unsatisfactory

Inorganic Alkalis
Chemical Formula  Conc. %) Hard Rubber
E-7
RT 90°C
Caustic Soda NaOH 48  O  O
Caustic Potash KOH 25  O  O
Aqua Ammonia NH4OH 28  O  ∆
O: Satisfactory       ∆: Marginal       X: Unsatisfactory
Inorganic Salts Solutions
Chemical Formula

Conc (%)

Hard Rubber

E-7

RT

90°C

Sodium Hypochlorite

NaClO

∆ 
Calcium Hypochlorite

Ca(ClO)2

 O   
Sodium Chlorate

NaClO3

 O   O 
Potassium Chlorate

KClO3

 O   O 
Sodium Chloride

NaCl

 O   O 
Calcium Chloride

CaCl2

 O   O 
Zinc Chloride

ZnCl2

 O   O 
Ammonium Chloride

NH4Cl

 O   O 
Sodium Sulfate

Na2SO4

 O   O 
Sodium Bicarbonate

NaHCO3

 O   O 
Potassium Bichromate

K2Cr2O7

 O   ∆
Sodium Sulfite

Na2SO3

 O   O 
Potassium Sulfite

K2SO3

 O   O 
Sodium Sulfide

Na2S

 O   O 
Potassium Sulfide

K2S

 O   O 
Sodium Thiosulfate

Na2S2O3

 O   O 
Sodium Phosphate

Na3PO4

 O   O 
Potassium Chloride

KCl

 O   O 
Ammonium Carbonate

(NH4)2CO3

 O   O 
Ferric Chloride

FeCl3

 O   O 
Ammonium Sulfate

(NH4)2SO4

 O   O 
Stannous Chloride

SnCl2

 O   O 
Chromium Chloride

CrCl2

 O   ∆ 
Nickel Sulfate

NiSO4

 O   O 
Silver Nitrate

AgNO3

 O   ∆ 
Aluminum Sulfate

Al2(SO4)3

 O   O 
Sodium Silicate

Na2O . SiO2

 O   O 
Sodium Aluminate

NaAlO2

 O   O 
Magnesium Hydroxide

Mg(OH)2

 O   O 
PAC

[Al2(OH)nCl6-n]m

 O   O 

O: Satisfactory       ∆: Marginal       X: Unsatisfactory

Organic Acids
Chemical

Formula

Conc. (%)

Hard Rubber

E-7

RT

90°C

Acetic Acid

CH3COOH

10

 O   O 
Glacial Acetic Acid

CH3COOH

10

 O   ∆ 
Formic Acid

HCOOH

90

 O   ∆ 
Oxalic Acid

(COOH)2

20

 O   O 
Butyric Acid

CH3CH2CH2COOH

100

 O   ∆ 
Tartaric Acid

(CH OH COOH)2

50

 O   O 
Lactic Acid

CH3CH(OH)COOH

25

 O   O 

O: Satisfactory       ∆: MarginalX: Unsatisfactory

Organic Compounds
Chemical

Formula

Conc. (%)

Hard Rubber

E-7

RT

90°C

Acetone

CH3COCH3

 ∆  ∆
Methanol

CH3OH

 O   O 
Ethanol

C2H5OH

 O   O 
n-Propylalcohol

C3H7OH

 O   O 
n-Butanol

C4H9OH

 O   ∆ 
Formaldehyde

HCHO

 O   O 
Glycerin

C3H5(OH)3

 O   O 
Ethylene Glycol

(CH2OH)2

 O   O 
Triethanolamine

N(CH2CH2OH)3

 O   O 
Glucose

C6H12O6

 O   O 

O: Satisfactory       ∆: MarginalX: Unsatisfactory

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