Silicone Rubber Composite Insulators

Silicone Rubber Composite Insulators consist of glass fiber reinforced epoxy resin tube, silicone rubber sheds, and aluminum end fittings. Extensive testing and wide applications prove that they are high quality.

Silicone Rubber Composite Insulators

Silicone Rubber Composite Insulators:
Composite insulators with silicone rubber insulation possess unique properties. Silicone rubber is the fastest-growing, most dominant polymeric insulation material for high voltage products. By choosing ORIENT composite insulators, excellent performance and reliability can be assured for the lifetime of the equipment.

Composite insulators were first introduced more than 30 years ago, and the use of hollow composite insulators on high voltage apparatuses is now well-accepted. They offer significant benefits compared to porcelain insulators. Increased safety, light weight, superior pollution and insulation performance are some of the reasons for OEMs and utilities worldwide to shift to ORIENT composite insulators.
ORIENT hollow composite insulators are made of glass fiber reinforced epoxy resin tubes with silicone rubber sheds and aluminum end fittings.

In-house production of glass fiber tubes:
The insulator tubes are made of electrical-grade glass fiber-reinforced epoxy resin using a wet filament winding technique. Precise and defined winding of the fiber onto the mandrel ensures uniform laminates of the highest quality.

Silicone rubber sheds for best performance:
The fiberglass tubes are coated with specially formulated high-temperature vulcanized (HTV) silicone rubber weather sheds, using a void-free helical extrusion process. ABB has developed a unique patented method of extruding the sheds with a helical pattern. This method ensures the best possible interface between the silicone and the tube and a seamless silicone coating with no molding lines. The flexibility of this method also ensures that any customer dimension (diameter, length or shape) can be met, even with the highest creepage distance requirements. HTV silicone rubber ensures the highest possible durability of the sheds, as well as outstanding tracking and erosion resistance.

Extensive testing:
ABB composite insulators are thoroughly tested to international standards and higher. They are installed all over the world and have proven excellent performance under all climates and harsh conditions such as coastal, desert and industrial environments.

Silicone Rubber Composite Insulators Applications:
We are currently providing hollow composite insulators in the voltage range from 72 kV - 1 100 kV AC / 800 kV DC and in lengths up to 11 m. More than 100 different composite insulators are in production, and each composite insulator design is tailor-made to the customer’s requirements. All composite insulators are tested and certified according to IEC 61462.

Technical Laminates & Machined Composite Components:
Composites have long experience as a supplier of high performance insulating composite components made of technical laminates. We offer a unique combination of technical expertise in the manufacture of both laminates and components, which allows us to adapt the best technical solution for almost any application.

Technical Laminates:
A technical laminate of composite is a combination of reinforcement, polymers and additives. We have a number of standard types of laminates with proven properties.
Our in-house production of laminates allows us to tailor the material properties to meet individual applications.
They can be designed to resist corrosion, chemicals, high temperatures and fire; the mechanical properties can also be tailored.
Our most common types of laminates can be found below. Detailed material data sheets are available upon request.

Filament Wound Products & Breaker Components:
The strongest composite materials are produced with guided continuous fibers and high fiber content. This is achieved through filament winding. The characteristics of filament wound materials make them suitable for a wide range of power applications.

A combination of high strength and low weight presents many engineering advantages. The end products are light, strong, stiff and tailor-made to fit the customer’s requirements. We use glass, aramid or polyester fibers together with either wet filament winding or dry filament winding followed by a vacuum injection process. Achieving the desired results requires experience and in-depth knowledge of the production process.


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Orient Group is a professional manufacturer and exporter of composite suspension insulator and porcelain disc suspension insulator.