Butyl Rubber exhibits:

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

Butyl Polymer Description

Butyl (also known as Isobutylene-isoprene) is impermeable to air and used in many applications requiring airtight rubber. Butyl rubber has outstanding resistance to gases, vapors, heat aging, oxygen, ozone, sunlight, abrasion and tearing. It has excellent resistance to alkalis and acids and is good for electrical insulation.

Select a drop down to learn more about Butyl.

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

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

Product Image
Durometer
Hardness
(Shore A ± 5)		 Thickness
inches		 Width
inches		 Tensile
psi		 Ultimate
Elongation
%		 Temperature
Range		 Estimated Weight
Per Linear Foot
(1/8" x 36")		 Specifications
40
040T0083		 1/32 - 1/4 36, 48 1100 550 -40°F to +180°F 2.09 lb ASTM D 2000
M1AA 407
50
050T0055		 1/32 - 1/4 36, 48 1100 400 -40°F to +180°F 2.2 lb ASTM D 2000
M1AA 507
60
060T0056		 1/32 - 1/4 36, 48 1100 300 -40°F to +180°F 2.24 lb ASTM D 2000
M1AA 607
70
070T0080		 1/32 - 1/4 36, 48 1500 250 -40°F to +180°F 2.3 lb ASTM D 2000
M1AA 707

Compound Numbers: 040T0083, 050T0055, 060T0056, 070T0080

Data presented here was gathered from several sources including Uniroyal Chemical Company, Inc., The Los Angeles Rubber Group, Inc., and Compass Publications

Our rubber products are a proprietary blend of various polymers formulated to meet stated physicals and specifications. The named product polymer is not necessarily the primary polymer representing the highest percentage of the polymer blend. Determination of the suitability of the goods for the uses and applications contemplated by Buyer and others shall be the sole responsibility of the Buyer or user. No guaranty is given with respect to length of service on any particular application. Suggestions or recommendations made by Seller in its product literature concerning uses or applications of the goods are believed to be reliable, but Seller makes no warranty or guaranty of results to be obtained since the conditions of the use and application by Buyer and others are beyond Seller’s control. The specification listed here, ASTM, stands for the American Society for Testing and Materials which is the developer and provider of voluntary consensus standards, related technical information, and services. Their website can be found here: https://www.astm.org/.

View complete Terms & Conditions of Sale for suitability of use and formulations