Butyl rubber is impermeable to air with outstanding resistance to gases, vapors, heat aging, oxygen, ozone, sunlight, abrasion and tearing. It offers excellent resistance to alkalis and acids and this material is good for electrical insulation, automotive parts and construction.

Attributes of Butyl:

  • Air tight and gas impermeable
  • Low glass transition temperature
  • Good ozone resistance
  • Good vibration damper
  • Biocompatible
  • Slow aging material
  • Non-toxic

Uses of Butyl:

  • Shock mounts and Butyl O-Rings
  • Sealant for rubber roof repair, construction sealants, hoses and mechanical goods.
  • Tubeless tire liners, inner tubes.
  • Stoppers for glass bottles, medicine bottles, and pharmaceuticals
  • Pond and Tank liners

Types of Butyl:

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 1/32 – 1/4 36, 48 1100 550 -40°F to +180°F 2.09 lb ASTM D 2000
M1AA 407
50 1/32 – 1/4 36, 48 1100 400 -40°F to +180°F 2.2 lb ASTM D 2000
M1AA 507
60 1/32 – 1/4 36, 48 1100 300 -40°F to +180°F 2.24 lb ASTM D 2000
M1AA 607
70 1/32 – 1/4 36, 48 1500 250 -40°F to +180°F 2.3 lb ASTM D 2000
M1AA 707

Physical Properties:

Elongation: 350%
Hardness Range (Durometer Shore A): 60
Thermal Properties:
Minimum Service Temperature: -22°F
Maximum Service Temperature: 240°F