Air springs incorporate a carefully designed rubber and fabric bellows that contains a column of compressed air. The rubber bellows itself does not provide force or support load – the column of air does this when the air spring is inflated according to the load required of it. Load capacity can vary from 40-40,000kg.

Firestone air springs are highly engineered elastomeric bellows with specifically designed metal end closures.

A standard two ply air spring is actually made up of four layers.

• An inner liner of calendered rubber,
• A first ply of fabric-reinforced rubber,
• A second ply of fabric reinforced rubber (with the cords at a specific bias angle to one another),
• An outer cover of calendered rubber.