What is Silicone?

What is Silicone?

Silicone is a synthetic elastomer composed of four key elements: silicon, carbon, hydrogen, and oxygen. It is derived from silicon, a naturally occurring element found in sand and quartz, which is first processed into pure silicon. This silicon is then chemically reacted with methyl chloride to form silanes, which are further treated with water to remove chlorine atoms. The result is a highly stable and adaptable material known as silicone.

Silicone can take many forms, including fluids, gels, and rubbers, but silicone rubber is particularly prized for its resilience and performance. Its unique molecular structure (with alternating silicon and oxygen atoms forming a flexible backbone) gives it an unusual combination of properties that are difficult to replicate in other materials.

As a result, silicone is not only versatile but essential in many industries that demand high-performance materials capable of withstanding tough environments while meeting strict regulatory standards.

What is Silicone? Four squares including the chemical symbols for Silicon, Carbon, Hydrogen and Oxygen -

Why Silicone?

Silicone rubber offers excellent thermal stability, electrical insulation, chemical resistance, and weatherproofing and stands out among engineering materials for its ability to retain these key properties under extreme conditions. Unlike many traditional rubbers and plastics,  it maintains flexibility and mechanical strength across a broad temperature range, typically from -60 °C to +200 °C, and can be formulated in various colours and hardness levels. These qualities make it an ideal material for applications where reliability and longevity are critical, such as medical devices, food-grade tubing, automotive components, dairy equipment, and industrial sealing solutions.

At Silclear, we work extensively with silicone rubber to develop custom compounds tailored to the specific performance requirements of our customers. Our in-house mixing capabilities allow us to fine-tune formulations to meet technical, regulatory and application-based criteria.

Silicone in Practice

Silicone’s adaptability makes it essential in sectors such as pharmaceutical & medical technology, food & beverage processing, agriculture & dairy farming, electronics, and general industrial manufacturing.

From tubing and seals to custom moulded parts, its physical and chemical stability make it a first-choice material where performance matters.

Key Features of Silicone Rubber

Extreme Temperature Resistant

Performs reliably between -60 °C and +200 °C, with special grades extending beyond.

Durability and Flexibility

Retains shape and elasticity over time, ideal for high-use, long-life components.

Non-Toxic & Safe

Suitable for use in food, pharmaceutical and medical applications.

Ultra-Smooth Hygienic Finish

Smooth surface reduces contamination risk and supports high hygiene standards.

UV and Weather Resistance

Maintains performance even with prolonged outdoor exposure.

Custom Colour and Transparency Options

Available in clear or custom-pigmented colours for product identification or aesthetic needs.

FAQs

Silicone is a man-made elastomer created from silicon, carbon, hydrogen, and oxygen. It’s produced by reacting silicon with methyl chloride and water, resulting in a highly stable and versatile polymer used in a wide range of industries.

Find out more: How is silicone made?

Yes, in a way it is. The base element in silicone is silicon, which is derived from silica; a primary component of sand. Through a series of chemical processes, silica is refined into pure silicon, which is then combined with other elements to create silicone.

While the final product is highly engineered and far removed from beach sand, silicone does ultimately originate from one of Earth’s most abundant natural materials.

Find out more: How is silicone made?

Silicone is used to manufacture products that require durability, flexibility and resistance to extreme conditions. Common uses include medical tubing, food-grade seals, electrical insulation, gaskets, cooking utensils and dairy equipment components.

While both are elastomers, silicone has superior temperature resistance, UV stability, and chemical resistance compared to natural rubber. Silicone is also non-toxic and more suitable for sensitive applications such as food processing or medical use.

While they may sound similar, silicon and silicone are completely different substances. One is a naturally occurring chemical element used in electronics, the other a synthetic, rubber-like material used across many industries.

Silicon is a solid natural element, while silicone is a versatile man-made polymer more like rubber or plastic. In short: Silicon is mined. Silicone is manufactured.

Find out more: Silicone vs Silicon: What’s the Difference?

Yes, silicone is widely used in food and medical sectors because it is non-toxic, chemically inert, and compliant with standards such as FDA 177.2600 and BfR XV. Silclear offers silicone products specifically formulated for safe contact with consumables and bodily fluids.

Silicone is more flexible, heat-resistant, and durable than most plastics. It doesn’t become brittle over time and retains its performance across a much wider temperature range, making it ideal for both dynamic and high-temperature environments.

Silicone offers a unique combination of benefits: long service life, resistance to extreme temperatures, non-reactivity, and excellent weatherability. It is often chosen when reliability and material stability are critical.

Silclear: Your Trusted UK Silicone Manufacturer

As a leading UK silicone manufacturer, Silclear has been formulating, extruding and moulding silicone products for nearly four decades. We proudly export precision silicone components around the world and support customers across a variety of technical sectors.

When you choose Silclear, you’re working with a team that brings deep expertise in both the material and its manufacturing processes. Whether you need a proven solution or a bespoke compound, we’re here to help you get the most out of what silicone can offer.

Contact us here, email info@silclear.com or call us on +44 (0)1425 610 700 to get started.

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