The Butyl Rubber Molding Experts

Butyl rubber molding is often used for outdoor applications because of its excellent weather and abrasion resistance. Also recommended for its ability to resist gases, inorganic acids and alkalis. Butyl is a non-pliable polymer/elastomer.

Butyl processed via rubber molding has excellent sealing properties and is a suitable choice for the manufacture of seals for chemical condensers. It is widely used in the electronics industry.

  • Good sealing properties
  • Resistant to electrolyte solvents
  • Low compression set

What is Butyl Rubber?

Butyl rubber, also known as isobutylene-isoprene rubber (IIR), is a versatile, general purpose, synthetic rubber and a copolymer of isobutylene with isoprene. Butyl rubber is produced by polymerization of about 98% of isobutylene with about 2% of isoprene. It is ideal for shock absorption, offers particularly low gas and moisture permeability, exceptional resistance to heat, weather, ozone, abrasion, tearing, chemical corrosion and much more.

Butyl rubber is impermeable to air, so it is useful in many applications requiring an airtight rubber. Butyl’s strength, flexibility, low gas permeability and airtight characteristics mean it is also ideal for high pressure or vacuum sealed applications. The first widespread application of butyl rubber molding, however, was tire inner tubes. This application is still central for butyl rubber molding to this day.

Butyl is an incredibly versatile synthetic rubber. However, it is not recommended for use in applications involving contact with petroleum oils.

butyl rubber molding

Properties of Butyl Rubber

  • Isobutylene-isoprene rubber (IIR)
  • ASTM D-2000 Classification AA, BA, CA (Standard Classification System for Rubber Products in Automotive Applications)
  • Chemical Definition Isobutylene Isoprene Rubber

Butyl Rubber Molding Processes

  • Transfer Molding
  • Injection Molding
  • Compression Molding

Qualiform ISO Certified Butyl Manufacturer

Qualiform Rubber Molding is a full-service custom rubber molding company. We can mold standard OEM replacement stars, custom finger lengths and configurations. If you would like to develop a recycling star for an application or media processing, our expert technical staff is available to consult on design and property requirements.

As a leading butyl rubber products manufacturer, Qualiform offers a full-range processing, development and testing capabilities.  We offer custom rubber molding services, rubber compression moldingrubber injection moldingrubber transfer molding, and rubber to metal bonding. Furthermore, we are experts in problem-solving in all aspects of rubber molding and rubber to metal bonding. Qualiform can offer effective, custom solutions for virtually any project.

With more than 40 years experience, customers rely on Qualiform for precision rubber parts manufacturing to get the parts they need.  Contact our technical staff at (330) 336-6777 to learn more about Qualiform can help you.

Qualiform Proprietary Blend

Qualiform also offers a proprietary butyl blend with reinforcing fibers. This blend increases wear resistance, durometer, abrasion resistance, toughness and performance properties by implementing reinforcing fibers into the materials.

Butyl Molding
Our technical staff is ready to assist you with all your custom rubber Butyl molding needs.
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