General Information

Common Name:

Butyl

Chemical Name:

Isobutylene-isoprene

Generally Resistant To:

Gases, Air, Alkalis, Acids, Water, Weather, Sunlight, Oxidation and Ozone.

Generally Attacked By:

Open Flame, Hydrocarbons, Oil and Gasoline

ASTM D 2000 / SAE J200 Classification:

AA, BA

MIL-R-3065 / SAE J-14 / MIL-STD-417 Classification:

RS

ASTM D-1418 Designation:

IIR

Physical Properties

Elongation:

300% to 850%

Hardness Range (Durometer Shore A):

40 to 80

Mechanical Properties

Compression Set:

Fair

Rebound Rating:

Poor

Flex Cracking Resistance:

Good to Excellent

Abrasion Resistance:

Good

Tear Resistance:

Good

Impact Resistance:

Good

Flame Resistance:

Poor

Thermal Properties

Minimum Service Temperature:

-60°F

Maximum Service Temperature:

+300°F

Environmental Resistance

Recommended Shelf Life:

5 to 10 years

Weather Resistance:

Excellent

Sunlight Resistance:

Excellent

Ozone Resistance:

Excellent

Oxidization Resistance:

Excellent

Water Resistance:

Very Good

Steam Resistance:

Excellent to Outstanding

Gas Permeability:

Good

Radiation Resistance:

Good, 1 x 10⁴ Ga Gy

Fair, 3 x 10⁴ Ga Gy

Chemical Resistance

Acetone:

Recommended: Little to Minor Effect

Amonium Hydroxide:

Recommended: Little to Minor Effect

Animal Fats:

Minor to Moderate Effect

Carbon Dioxide:

Minor to Moderate Effect

Chlorine:

• DRY:

  - - -

• WET:

  Moderate to Severe Effect

Fluorine (Liquid):

Moderate to Severe Effect

Fuel Oil:

NOT RECOMMENDED

Gasoline:

NOT RECOMMENDED

Hydrochloric Acid 37%:

• HOT:

  Moderate to Severe Effect

• COLD:

  RECOMMENDED: Little or Minor Effect

Hydrochloric Acid Concentrate 37%:

• HOT:

  NOT RECOMMENDED

• COLD:

  Minor to Moderate Effect

Kerosene:

NOT RECOMMENDED

Methyl Ethyl Ketone:

RECOMMENDED: Little or Minor Effect

Mineral Oil:

NOT RECOMMENDED

Naptha:

NOT RECOMMENDED

Natural Gas:

NOT RECOMMENDED

Nitric Acid:

• Concentrate:

  Moderate to Severe Effect

• Dillute:

  Minor to Moderate Effect

• Red Fuming:

  NOT RECOMMENDED

Petroleum:

• Below 250:

  NOT RECOMMENDED

• Above 250:

  NOT RECOMMENDED

Phosphoric Acid:

• 20%:

  RECOMMENDED: Little or Minor Effect

• 45%:

  Minor to Moderate Effect

Propane:

NOT RECOMMENDED

Salt Water:

RECOMMENDED: Little or Minor Effect

Skydrol:

• Skydrol 500:

  Minor to Moderate Effect

• Skydrol 7000:

  RECOMMENDED: Little or Minor Effect

Sodium Hydroxide:

RECOMMENDED: Little or Minor Effect

Sulfuric Acid:

• Concentrate:

  Minor to Moderate Effect

• Dillute:

  Minor to Moderate Effect

• 20% Oleum:

  NOT RECOMMENDED

Toluene:

NOT RECOMMENDED

Transformer Oil:

NOT RECOMMENDED

Vegetable Oils:

RECOMMENDED: Little or Minor Effect

Vinegar:

RECOMMENDED: Little or Minor Effect