Butyl rubber (isobutylene-isoprene rubber) is a synthetic rubber made from the copolymerization of isobutylene and a small amount of isoprene.Butyl rubber is known for its very low gas permeability and good aging resistance, so it is commonly used in the manufacture of seals such as O-rings. Below are some details about Butyl O-Rings:

What is the Butyl O-rings Material Properties ?

• Low gas transmission rate: Butyl rubber has an extremely low gas transmission rate, making it ideal for sealing gas applications such as tire inner tubes, balloons and gaskets.
• Ageing resistance: Butyl rubber has good ageing resistance and is resistant to the effects of UV, ozone and climate change.
• Chemical resistance:Butyl rubber has good resistance to a wide range of chemicals, including water, alcohols, dilute acids and dilute bases, but is less resistant to hydrocarbons, greases and certain solvents.
• Electrical insulation: Butyl rubber has good electrical insulation properties and is suitable for sealing electrical and electronic equipment.
• Temperature resistance: Butyl rubber’s temperature resistance range is generally between -40°C and +120° Some specially formulated Butyl rubber can withstand higher temperatures.
• Mechanical properties: Butyl rubber has good elasticity and resistance to permanent deformation in compression, but its abrasion and tear resistance is not as good as some other rubber materials.

Where is the Butyl O-rings Application Areas ?

Butyl O-rings are widely used in the automotive industry, aerospace, construction, chemical, medical device and food processing industries for sealing gases, water, alcohols and other non-polar liquids.

How is the Butyle O-rings Manufacturing Process ?

Butyl O-Rings are typically manufactured through a molding or extrusion process. Molding involves placing pre-mixed Butyl rubber material into a mold and forming it under high temperature and pressure; extrusion involves extruding Butyl rubber material into the shape of an O-ring through an extruder and then vulcanizing it.

Which is the Butyl O-rings Specifications and Standards ?

Butyl O-Rings are available in a variety of sizes and hardnesses that can be customized for different applications. Common standards include ISO 3601 (international standard), AS 568 (American standard), etc.

What should we pay attention to ?

• Storage conditions: Butyl rubber materials should be stored in a dry, cool, well-ventilated place, avoiding direct sunlight and high temperatures.
• Use environment: Although Butyl rubber is resistant to aging and chemicals, it may be affected in certain hydrocarbon, grease and solvent environments.
• Installation requirements: Butyl O-rings should be installed without scratching or twisting to ensure sealing effectiveness.

The selection and use of Butyl O-Rings needs to be determined according to the specific application environment and requirements to ensure the best sealing effect and service life.