Silicone Rubber Gaskets

Order our high-quality rubber gaskets made to your exact specification. If however, you are after more specific custom made silicone rubber gaskets then send us a request and we will be happy to accommodate. Silicone is the perfect material for gaskets as it forms a very tight seal, thus helping to repel water. We manufacture all of our products to very tight and precise tolerances for superior sealing.

Silicone Rubber Gaskets 5.min scaled - Silicone Rubber Gaskets - Viking Extrusions

What are silicone rubber gaskets?

 A silicone gasket is a mechanical seal that is capable of operating under extreme conditions and environments like extreme heat and cold. The gaskets form tight seals between two components in order to prevent any leakages. 

The silicone gaskets have a phenomenal resistance to extreme temperatures, both hot and cold. That, along with the fact that they have exceptional UV and ozone properties make them perfect for outdoor applications. In addition to this, silicone is also an inert material, meaning that it does not react to the majority of chemicals that it may be exposed to, making it hugely popular for many different kinds of applications. 

Gaskets come in all shapes and sizes. That’s why we make all our high quality gaskets to order. We make bespoke silicone rubber gaskets and silicone seals to meet any requirements that you may have. 

About our services

We have been producing high-quality silicone gaskets and many other silicone products for over 30 years. We guarantee both amazing service and short lead times, all at a price that will be sure to beat our competitors. 

No order is too large, nor is it too small. We can deliver the highest quality bespoke silicone gaskets up to 3000mm x 1500mm x 20mm thick (with a 50mm maximum thickness for silicone sponge).


  • Shore Hardness: 60° ± 5° (standard)
  • Temperature: -70°C up to +250°C (white, translucent, blue and red)
  • Comes in a wide range of colours, thicknesses and lengths
  • Good release properties
  • Unrivalled heat resistance and electrical insulation properties
  • High quality material
  • Brilliant durability and elasticity properties
  • FDA approved 
  • WRAS approved

How are silicone rubber gaskets manufactured?

Die cutting involves creating a bladed tool in the shape of the desired gasket. The tool is set either above or below the gasket material. A hydraulic press is then used to cut out the gasket. Die cutting has several advantages including:

  • Low tooling cost
  • Fast set up time
  • Reusable tooling
  • Consistent cutting tolerance
  • Suitable for small and large production runs

Flash cutting is a great way to quickly create custom gaskets. During the flash cutting process, a dieless oscillating knife is used to cut through material of varying depth. Cutting equipment is integrated with computer aided design (CAD) systems.  The CNC cutting machine uses code generated from the CAD file to control the movement of the knife, to accurately produce the desired shape. 

Advantages of CNC flash cut gaskets include:

  • No tooling costs
  • Fast lead times
  • Multiple designs can be cut on a single sheet
  • Highly complex shapes & designs, from large rubber gaskets, extruded silicone gaskets and more
  • Consistency across gaskets
  • Human error removed

Lathe cutting involves placing a silicone rubber tube onto a mandrel. The mandrel is then rotated at high speed on a lathe machine. Benefits include:

  • Fast lead times
  • Tight tolerances
  • Minimal material waste
  • Suitable for large OD & Small ID gaskets
Silicone Rubber Gaskets 3.min - Silicone Rubber Gaskets - Viking Extrusions

Silcione Gasket FAQs

Silicone gaskets are perfect for use in commercial, personal, heavy machinery, vehicles and many more. Silicone gaskets help to reduce vibrations in vehicles and provide high-performance seals for radiators.

They are also frequently used in outdoor environments due to their resistance to weathering, ozone, UV and oxidation. Because silicone is a naturally inert material, it does not react with many chemicals, making it highly suitable for a large number of medical and industrial applications.

Silicone has one of the longest shelf lives of all the materials commonly used for gaskets and can last up to four times longer than other, non-silicone materials. A typical non-silicone gasket has a typical shelf life of around 3-10 years.

Yes. This is because silicone based sealants are chemical resistant and also have higher tensile strength than other polyurethane based materials.

Gaskets and seals are made from the same materials and are also made in the exact same way. The difference is in the way they are applied. For example, gaskets help to seal a connection between two components with flat surfaces that have very little movement. Seals however are used between things that tend to have a lot of movement such as moving engine parts, pumps and so on.

If you need a silicone rubber gasket manufacturer or to order quality silicone gaskets, please get in touch

One of our experts will be happy to answer any questions you have and to discuss your requirements.

A warehouse filled with rubber manufacturing machinery.