Impermeable to Air • Outstanding Resistance to Gases & Vapors • Excellent Outdoor Resistances (Heat Aging, Ozone, Oxygen, Sunlight) • Excellent Abrasion & Tearing Resistance

Butyl Rubber’s Properties & Uses

Select any of these drop down options to learn more about Butyl Rubber. Our team has organized lists of key properties relating to the rubber products which use the Butyl polymer. We encourage you to select through these lists and advise that you reach out to us directly for any questions so we can direct you to our technical team.

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

Elongation:
300% to 850%

Hardness Range (Durometer Shore A):
40 to 80

Compression Set:
Fair

Rebound Rating:
Poor

Flex Cracking Resistance:
Good to Excellent

Abrasion Resistance:
Good

Tear Resistance:
Good

Impact Resistance:
Good

Flame Resistance:
Poor

Minimum Service Temperature:
-60°F

Maximum Service Temperature:
+300°F

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

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

  • Actual shelf life could vary dramatically based on storage conditions
  • Store in a cool, dry place with temperature below 75°F
  • Keep away from direct heat or open flames
  • Avoid contact with solvents or other fluids
  • Do not store in direct sunlight
  • Keep products wrapped or sealed to minimize the absorption of moisture
  • Store in a relaxed condition free from tension, compression or other deformation

See Rubber Storage Conditions for more information about how to properly store your rubber products

Butyl Sheet Rubber Products

Our Butyl products are impermeable to air and used in many applications requiring airtight rubber. Our Butyl products have outstanding resistance to gases, vapors, heat aging, oxygen, ozone, sunlight, abrasion and tearing. They also exhibit excellent resistance to alkalis and acids and are good for electrical insulation. Made in the USA.

Samples available upon request.

Color: Black

Finish: Smooth

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