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Silex offers a range of manufacturing methods for producing silicone rubber O-rings including bonding cord, strip or tubing into rings, or moulding them for ultra-precise O-Rings without a join.

Unlike other kinds of O-Rings, silicone offers excellent temperature, chemical and environmental resistance, and can be produced in a wide range of material grades including FDA compliant and high and low temperature options.

Silicone O-Rings are excellent for sealing applications requiring longevity, Ozone and UV radiation resistance.

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O-Rings can be quickly and cost-effectively produced from any of our stock materials, or we can extrude sections in special materials, colours, hardnesses or sizes for joining on request. 

Where a join isn’t acceptable, O-Rings can be moulded with a small tooling charge. 

Silex stocks cords, which can be fabricated into O-Rings in the following material grades:

  • High and low temperature grades
  • Shore hardnesses from 40°-70° shore A
  • Metal detectable – popular in food and beverage and pharmaceutical applications
  • Fluorosilicone – with superior resistance to fuels and volatile liquids. 
  • Sponge grades, including an FDA approved sponge.


  • Can be produced in many hardnesses and sizes
  • Sponge and solid
  • Joined or moulded versions
  • Superior weathering, ozone and UV resistance

Application and Use

  • Cryogenic applications 
  • Pumps, connectors and valves, particularly in food and beverage and pharmaceutical industries
  • Seals and Gaskets

Can we help you?

If you’d like to discuss your idea, requirements or application with a member of our technical team, fill out the form below or contact us.
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