1. We can classify rubber parts according to their appearance. Rubber can be divided into four categories: emulsion rubber (latex for short), solid rubber (also known as dry rubber), liquid rubber and powder rubber.

2. Through the source of raw materials, rubber can be divided into natural rubber and synthetic rubber. The consumption of natural rubber accounts for 1 / 3 and that of synthetic rubber accounts for 2 / 3.

3. According to the properties and uses of different rubbers, in addition to natural rubber, synthetic rubber can also be divided into general synthetic rubber, special synthetic rubber, semi general synthetic rubber and special synthetic rubber.

4. Generally, according to the physical form of rubber, rubber can be divided into hard rubber and soft rubber, raw rubber and mixed rubber.

5. According to the type of rubber and the form of cross-linking, in industrial use, rubber can be classified as follows.

The first category can be divided into heat-resistant rubber, ordinary rubber, weather aging resistant rubber, oil-resistant rubber, special chemical medium resistant rubber, etc.