Silicone Rubber Gaskets are available in a wide range of shapes and sizes, and have many different applications. These gaskets are traditionally used in all types of industry that can include, the engineering industry, the aircraft industry, the building industry and the catering industry, to call just a few. They are very commonly employed between a couple of surfaces, where leaks of fluid or air must be contained. The surfaces are brought together and the silicone rubber gasket is compressed which produces a great seal. In the case of silicone O rings where some motion are usually necessary, lubrication is very often achieved by the fluid being sealed. - O-rings
As a result of properties of the silicone these gaskets can take on many forms for example;
o Mitre cut letter box shape
o Horse shoe shape
o O ring shape
Silicone has very versatile properties due to its ability to resist extreme temperatures, and moisture repelling qualities. It is commonly used in adhesives, sealants, medical applications, cookware, insulation and lubricants. Silicones are polymers that are made from chemical elements and will include oxygen, hydrogen and silicon.
Silicone has several useful properties plus some of these can include;
o Low toxicity
o Thermal Stability
o Water Repelling
o Good potential to deal with sunlight and oxygen etc.
o Good electrical insulation
Silicone gaskets are mechanical seals utilized to prevent leakage between two surfaces. Gaskets usually require some type of compression, and therefore some degree of yield or some type of de-formation is required by the gasket. Silicone rubber gaskets are perfect for such applications. An O-ring as an example is an extremely versatile kind of silicone gasket, and is commonly used in all types of pipe-work and plumbing applications, and will even allow a small amount of motion between the two surfaces whilst efficiently sealing them.
Different types of silicone gaskets can include;
o Silicone gaskets
o Solid silicone gaskets ( popular on metal closures)
o Sponge silicone gaskets
o Silicone foam gaskets (closely related to sponge gaskets)
o Injection moulded silicone gaskets
Foam gaskets from the opened cell type can be used dust seals or shock and vibration gaskets. Closed cell is mainly used for environmental seals.- O-rings