Fabricated Silicone Rubber Gaskets
We have 30 years’ experience cutting extruded silicone tubes, strips, cords and profiles into lengths of all sizes. We have a large range of modern in-house joining equipment and are able to supply both small prototyping batches as well as production orders of many thousands of parts.
Manufacturing Capabilities
We are able to manufacture a diverse range of fabricated silicone rubber gaskets and seals using a variety of cutting and joining techniques. Some of the more common processes we use are:
- Mitre Joins – Extruded silicone profiles can be cut, and mitre joined to form rectangular ‘picture frame’ gaskets, commonly used as window and door seals.
- Moulded corners – For gaskets that require corners with a tight radius where mitre joins are not suitable, we are able to use moulded corners. Corners can be moulded to any angle and are used to join complex profiles and assemble gaskets with complex geometries.
- Punched / Drilled Holes – we are able to punch or drill holes wither all the way through, or partially through silicone extrusions.
- Adhesive backing – Depending on the design of the extruded profile, we are able to apply a variety of self-adhesive backing tapes to gaskets. Specialist grades of adhesive tapes are available on request.
- Bonding – We can perform a variety of bonding processes including silicone-to-silicone and silicone-to-metal.
Properties of Silicone Rubber
- Temperature Resistant – Silicone rubber is thermally stable over large temperature ranges from -60°C to + 200°C (and higher for specialist grades).
- UV and Ozone Resistance – Silicone rubber has excellent UV and Ozone resistance, making it an ideal material choice for outdoor and long-term applications.
- Electrical Insulation – Silicone rubber exhibits high electrical insulation properties. It is frequently used to make gaskets and seals used for electrical enclosures.
- Excellent Moisture Resistance – Silicone rubber can be immersed in cold, warm or boiling water for long periods of time with virtually no effect on mechanical strength or electrical properties.
- Chemical Stability – Silicone rubber is highly inert and does not react with most chemicals. It is biocompatible and hypoallergenic and is suitable for use in food contact and baby care products.
- Flame Retardant – Specialist additives can be added to silicone rubber compounds to give them flame retardant properties.
- Steam Resistant – Silicone rubber is generally not deteriorated by steam at normal pressures. Special grades of silicone are available which have greater resistance to superheated or pressurised steam.
To learn more about the properties of silicone rubber visit our material properties page or view our chemical compatibility chart. More information and datasheets for the materials we supply are available on our materials page.
Get in touch with Viking Extrusions
Contact our expert team of silicone engineers for advice, quotations or any other queries.
