Rubber molding is used in the marine, automotive and construction industries. Viton rubber is a specialized synthetic rubber that is combined with a fluoropolymer elastomer. This combination makes viton rubber particularly durable in applications where it will be exposed to aggressive chemicals. Harsh weather conditions or high temperatures have little effect on the performance of viton, which makes it perfect for molding applications where the conditions will be less than ideal. While viton rubber is more expensive than most rubber components, it is also more durable and will likely last a lot longer than any other grade of rubber used for molding.
Either injection molding or compression molding can be used when manufacturing viton rubber. When injection molding is used, the heated rubber is pumped through a machine barrel and comes out a nozzle where it is then injected into a mold. It fills the cavities of the mold, forming the desired rubber part when it cools. The rubber is given time to cure before it is removed from the mold and sent to packaging. When the compression molding process is used, an uncured rubber form which is in the approximate shape of the product is put into an exact mold where it is compressed between the plates. This pressure causes the excess rubber and air to be forced out, and then the rubber is treated with heat to help it cure. The end result is a product that meets the manufacturing specifications.
Viton rubber molding is often used in the O-rings of a car's fuel injectors. The material creates a perfect seal that maintains fuel compression, and the durable viton rubber does not break down even though it is continually exposed to fuel while the vehicle is running. Engines also produce a very high level of heat when they are running, which is why viton rubber is perfectly suited to withstand the conditions under the hood of a car. This same principle applies to engines used in construction equipment and boats. Boats are particularly vulnerable to rubber disintegration if they are used in salt water, so the use of viton rubber molding prevents deterioration which could lead to leaks or engine malfunctions.
Viton Rubber Molding - Britech Industries