Silicone rubber seals are often used in medical equipment

Silica gel (VMQ), also known as silicone rubber, is used in the sealing industry as seals for food-grade sealing products, as well as working seals in low-temperature environments. Its material has good heat resistance, good dielectric resistance and elasticity in low temperature sealing environment. Its weather resistance, ozone resistance and UV resistance are good, so it is also used for sealing of medical equipment, but it is generally not suitable for The mineral oil seal works.

The material of the silicone rubber seal is a highly active adsorbent material, which is an amorphous substance. Its chemical molecular structure is insoluble in water and remembers any chemical solvents. It is non-toxic, odorless, stable in chemical properties, and does not react with any substance. Sealing rings used for food products can also be made of silicone materials for drinking glasses, etc., because the special materials can be used to assist the production of medical equipment.

Medical silicone rubber has some inherent properties, such as biocompatibility with human tissues. Silicone rubber seals are usually used in medical equipment. Although the silicone rubber itself is relatively inert, organic nutrients may be adsorbed on the surface of the silicone rubber and form a biofilm during the use of the equipment. Many devices containing silicone rubber are exposed to the proper moisture, nutrients, time, and temperature conditions suitable for the growth of biofilms, including transplants, catheters, intravenous connectors, and tubing used for respiratory therapy. 

With increasing contact time and unsuccessful intervention, the biofilm that produces microorganisms can cause infection. Therefore, the use of silver is by far the most common antibacterial agent used in antibacterial medical devices. The biocompatibility of antibacterial agent treatment and the integration of silicone rubber are important issues that need to be considered to determine whether the device is biocompatible.