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What are the basic characteristics of rubber gaskets?

Update:07-08-2020
Summary:

1. When the rubber gasket is molded, the cohesive force […]

1. When the rubber gasket is molded, the cohesive force of the elastomer cannot be eliminated due to the large pressure limit. When the molding is released, the extremely unstable shortening often occurs (the shortening rate of the rubber depends on the type of rubber. There are differences), it must pass for a period of time before it can relax and stabilize. Therefore, when a rubber product is planned at the beginning, regardless of the mold, it is necessary to carefully calculate and cooperate. If not, it will simply happen that the product size is unstable, resulting in low quality of the product.

2. Rubber gaskets are hot-melt thermosetting elastomers, while plastics are classified as hot-melt and cold-solid. Due to the different types of rubber sulfide, the temperature range of its molding and curing also has an appropriate gap, and it can even be affected by climate changes and indoor temperature and humidity. Therefore, the production conditions of rubber products need to be adjusted appropriately at any time. If not, the quality of the finished products may differ.

3. The rubber gasket is a mixed rubber made of rubber material after mixing in an internal mixer as a raw material. It is planned according to the characteristics of the required rubber product during rubber mixing, and the required product hardness is determined. Commodity manufacturing is molded by a rubber plate vulcanizer. After the product is formed, the flashing treatment is finally performed to make the appearance of the product smooth and free of burrs.

Rubber seal

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