Butyl Rubber

Butyl Rubber is a unique synthetic rubber that is highly impermeable to air, making it an ideal material for use in applications that require airtight seals. The polymer is formed by the copolymerization of isobutylene and small amounts of isoprene. This results in a polymer with low levels of unsaturation, which provides excellent flexibility and resistance to cracking.


  1. Impermeability: Butyl rubber exhibits exceptional impermeability to gases, making it ideal for applications where airtight seals are crucial. This property makes it popular for use in tire inner tubes, tubeless tire liners, and seals for a variety of applications.

  2. Chemical Resistance: It has excellent resistance to many chemicals, including acids, alkalis, and oxidizing agents. This property makes it suitable for applications in industries where exposure to harsh chemicals is common, such as in the chemical processing and pharmaceutical industries.

  3. Weather Resistance: Butyl rubber maintains its integrity in various weather conditions, including exposure to sunlight, ozone, and extreme temperatures. This weather resistance makes it a preferred material for outdoor applications such as roofing membranes and seals for windows and doors.

  4. Flexibility and Elasticity: Butyl rubber is highly flexible and elastic, allowing it to maintain its shape and performance even under repeated stretching and bending. This property makes it suitable for applications where resilience and durability are required, such as in automotive components and vibration isolation mounts.

  1. 5. Low Gas Permeability: Butyl rubber has one of the lowest gas permeability rates among rubbers, making it an excellent choice for applications requiring gas or moisture resistance, such as in inflatable bladders, gas masks, and gloves.
  2. 6. Electrical Insulation: It exhibits good electrical insulation properties, making it useful in applications where electrical conductivity needs to be minimized, such as in electrical cable insulation and gaskets for electronic enclosures.
  3. 7. Damping Properties: Butyl rubber has good damping properties, meaning it can absorb and dissipate energy, making it suitable for use in shock absorbers, vibration dampers, and mounts to reduce noise and vibrations.

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