Silicone tube and latex tube sealing effect is well known, but generally affected by the outside world and their own situation, product sealing performance will also change. According to the investigation, the main external reasons that affect the sealing effect of silica gel tube and latex tube are: the selection of sealing structure and oil film formation, pressure, temperature, material compatibility, and the material, hardness, geometry and surface finish of the working surface of the seal contact.

Then the factors affecting the sealing effect of silica gel tube have the following three points:
1. Oil resistance. The performance of the product was evaluated by comparing the test values before and after soaking (such as the hardness change of the material, the rate of change of tensile strength, the rate of change of tensile elongation, the rate of change of volume, the rate of change of compression permanent deformation, etc.).
2, heat and cold resistance: silica gel tube at -70~350 degrees Celsius, still has good elasticity.
3, UV resistance and ozone: both of which have great oxidation, can quickly decompose objects. And the silica gel tube is almost unaffected. Because the resistance of silica gel tube to itself is very good, so most of the general sealing devices will choose silica gel tube rather than latex tube.