4、 Tear strength
The resistance to the expansion of the incision or scratch when applying force to a sample with a incision. Even when cut open and subjected to extremely high torsional stress, the hot vulcanized solid silicone rubber can remain intact. The tear strength range of hot vulcanized solid silicone rubber is between 9-55 kN/m. The tear strength range of fluorosilicone rubber is between 17.5-46.4 kN/m. The tear strength range of liquid silicone rubber is between 11.5-52 kN/m.

5、 Elongation rate
It usually refers to the "ultimate fracture elongation" or the percentage increase relative to the original length when the sample fractures. The elongation range of hot vulcanized solid silicone rubber is generally between 90% and 1120%. The elongation of fluorosilicone rubber is generally between 159 and 699%. The elongation of liquid silicone rubber is generally between 220% and 900%. Different processing methods and the selection of hardeners can greatly alter its elongation. The elongation of silicone rubber is closely related to temperature.

6、 Operation time
The operation time starts from the moment when the colloid is added to the vulcanizing agent. There is actually no complete boundary between this operation time and the subsequent vulcanization time. The colloid undergoes vulcanization reaction from the moment the vulcanizing agent is added. This operation time means that the 30 minute vulcanization reaction of the product can not affect the quality of the finished product. So the more time is saved during product operation, the more beneficial it is for the finished product.

7、 Vulcanization time
In some places, it is said to be the curing time. That is to say, after such a long time, the vulcanization reaction of silicone gel has basically ended. This basically ends, which means that the product is already usable, but in fact, there is still a small part of the curing reaction that has not ended yet. So products made of silicone rubber, such as silicone molds, usually need to be left for a period of time before being put into use.