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Silicone O-Rings

Silicone O-Rings for Food, Pharma, Medical and Industrial Use

Silclear manufactures high-quality O-rings for sealing, insulating and protecting components in a wide range of industries. Whether you’re working in food and beverage production, pharmaceutical processing, dairy systems, or cleanroom environments, our silicone rubber O-rings deliver long-lasting performance and reliability.

As a trusted UK silicone manufacturer, we offer a wide selection of sizes, grades and customisation options to suit your exact application. All our products are made using premium silicone for optimal flexibility, hygiene and resistance to extreme temperatures, UV exposure and chemicals.

If you’re looking for food-grade options, medical-grade options or custom seals designed to meet strict specifications, Silclear can help.

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What Are Silicone O-Rings and Where Are They Used?

Silicone O-rings are precision-engineered circular seals made from high-grade silicone rubber. Known for their flexibility, thermal stability, and inertness, silicone O-rings are used to prevent the leakage of gases or liquids in a wide range of demanding environments. Unlike traditional rubber seals, silicone O-rings are exceptionally resistant to heat, cold, UV, and chemical exposure, making them an ideal choice for industries where hygiene, safety, and longevity are critical.

Common applications for silicone rubber O-rings include:

  • Food and Beverage Processing:
    Used in pumps, valves, and pipe joints where hygiene and food safety are essential. Food-grade silicone O-rings are compliant with FDA, BfR, and 3A standards.
  • Pharmaceutical and Medical Devices:
    Ideal for sterile environments and medical equipment such as fluid handling systems, diagnostic machines, and peristaltic pumps.
  • Dairy Equipment:
    Seals and gaskets for milking parlours, rotary systems, and automated dairy machines where resistance to cleaning agents and long service life are key.
  • Water Filtration and Treatment Systems:
    Used to create watertight seals in filtration housings, valves, and pressure vessels.
  • Electronics and Cleanroom Environments:
    Low outgassing properties and high purity make silicone O-rings suitable for sensitive electronics and semiconductor manufacturing.
  • Automotive and Industrial Machinery:
    Performing well under high vibration, temperature fluctuations, and chemical exposure, silicone rubber O-rings are used in sensors, fuel systems, and engine components.

Whether you need standard sizes or bespoke silicone O-rings, Silclear can supply precision-moulded components tailored to your application.

Benefits of Silicone O-Rings

Excellent temperature resistance (typically -60°C to +200°C)
FDA and food-safe options available
Resistant to UV, ozone and chemicals
Flexible and durable under pressure
Custom colours, sizes and hardness available

Trusted UK Manufacturer of Silicone O-Rings

With nearly 40 years of experience, Silclear is a leading UK manufacturer of precision silicone O-rings and rubber sealing solutions. Our expertise in silicone compounding and moulding allows us to produce high-performance O-rings tailored to your exact requirements, from standard sizes to fully bespoke designs.

Whether you’re sourcing food-grade silicone O-rings for hygienic applications or need durable sealing solutions for industrial equipment, we’ll work with you to ensure the right fit, formulation and finish every time.

Contact us today to discuss your project or request a sample. Call us on +44 (0)1425 610700, email info@silclear.com or enquire below.

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FAQ

Silicone O-rings are used to create airtight and watertight seals in a wide range of applications. They’re ideal for food processing, medical devices, water systems, automotive components and any environment requiring high temperature or chemical resistance.

Yes, silicone O-rings are known for their excellent thermal stability. They typically perform reliably in temperatures ranging from -60°C to +200°C, making them ideal for both extreme heat and cold.

Silicone O-rings can be manufactured from food-grade compliant materials that meet FDA, BfR, and 3A standards. This makes them safe for direct contact with food and drink in hygienic environments.

We supply silicone O-rings in a wide range of standard sizes, and we can also manufacture custom sizes to meet specific requirements. Whether you need miniature O-rings or large-diameter options, we can help.

Yes, at Silclear we specialise in custom silicone O-rings. We can tailor the size, hardness (shore), colour and material formulation to meet your exact application needs.

Silicone O-rings are more resistant to extreme temperatures, UV light, ozone and many chemicals than standard rubber O-rings. They also offer greater flexibility and longer service life in demanding environments.

Yes, silicone O-rings offer excellent resistance to UV radiation, ozone and weathering, making them well-suited for outdoor sealing applications.

Yes, we can manufacture silicone O-rings in a variety of colours to suit different identification systems, branding or specific industry requirements.

Enquire about our Silicone O-Rings

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