HNBR Rubber O Ring

HNBR Rubber O Ring

Product number:KXT 1710HNBR

Quick Overview: HNBR is made via selective hydrogenation of the NBR butadiene groups which improves the temperature and ozone resistance considerably

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Product Description

HNBR Rubber O Ring

HNBR is made via selective hydrogenation of the NBR butadiene groups which improves the temperature and ozone resistance considerably. Due to the polymer structure, HNBR offers both resistance to polar and nonpolar media. The selection for dedicated automotive applications depends on the ACN content which can range from 18% to 50% (this influences the swelling in oil), as well as on the degree of saturation (this influences the heat resistance). HNBR offers extraordinarily good mechanical properties and abrasion resistance. The operating temperature ranges, when in contact with mineral oils and greases from -30°C/-22°F to 140°C/284°F and for a short period of time up to +160°C/320°F. Special types can be used down to -40°C/-40°F. 

 

Advantages

High tensile strength and good physical properties at high temperatures

High strength, helps reduce extrusion and wear

• Good abrasion resistance and oil resistance

Superior heat resistance up to 140°C

Superior mechanical characteristics

Superior environmental resistance

Improved resistance to polar fluids

Good Chemical resistance

Cold flexibility

Cars

 

Application

Dilute acids, bases and salt solutions at moderate temperature

Actuator seals for gear box applications

HFA, HFB and HFC hydraulic fluids

Vegetable and animal fats and oils

Water and steam up to 149°C

Air conditioning applications

Used for general purpose

• Automotive applications

Refrigerents

• Hot water., etc

 

HNBR Properties

Item

HNBR

Test Method

Color

Blue/black


Specific gravity

1.2-1.4g/cm3

ASTM D297

Hardness

40°-80° Shore A

ASTM D2240

Tensile strength

15 MPa (min)

ASTM D412

Elongation at break

200% (min)

ASTM D412

Size

Varies


Compression set 170°C 22 hrs

Permanent set 23%(max)

ASTM D 395B

Low temperature resistance

-30

ASTM D1329

Temperature range

-30°C to +170°C

ASTM D2000

 

Chemical Compatibility Overview

HNBR

Excellent

Good

Fair

Poor

Aliphatic Hydrocarbons

1




Automatic Transmission Fluid

1




Automotive refrigerants

1




Brake Fluids Non-Petroleum



3


Chlorinated Hydrocarbons




4

Dilute Acids

1




Hydraulic Fluids HFA, HFC, HFB

1




Polar Solvents (Keytones)




4

Salt Solutions


2



Silicone Oils

1




Strong Acids




4

Vegetable & Animal Fats / Oils

1




Water & Steam up to 300ºF

1















HNBR

Excellent

Good

Fair

Poor

Abrasion Resistance

2

Acid Resistance

1

Chemical Resistance

3

Cold Resistance

2

Compression Set Resistance

2

Dynamic Properties

2

Electrical Properties

3

Elongation

2

Flame Resistance

4

Heat Resistance

1

Impermeability

2

Oil Resistance

1

Ozone Resistance

2

Tear Resistance

3

Tensil Strength

1

Water Steam Resistance

1

Water Steam Resistance

2











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