What we usually call medical grade silicone parts is silicone that can be used in medicine, but it is limited to external use and cannot be used in human body. However, it can be used in the medical industry and can be in contact with skin, but it cannot reach the medical level and biocompatibility inspection. In other words, as long as it is not used in the body, this kind of silica gel is OK.

Medical grade silicone parts show that they have obtained medical grade certification and biocompatibility report. It can be used for a series of medical purposes, including contact with human blood. The safety level is higher than the food level and medical level.

In addition to its elasticity and softness, silica gel is almost completely biologically inert. That won't corrode and decompose in human body. In addition, the cost of plastics and rubber elastomers has risen, and the progress of chemical engineering has actually reduced the cost of silicone oil. In addition, many large vendors of medical silicone parts have provided various special materials to meet the growing market demand. These factors have promoted the development of medical silicone parts.

Medical grade silicone products are usually in the form of liquid silicone rubber (LSR) or high consistency rubber). Both can be used to form complex geometric shapes. The old HCR form is suitable for many conventional transfer and compression forming methods. On the other hand, LSR is suitable for injection and processing similar to thermoplastic.

Liquid silicone rubber uses a two-part solution, which needs to be heated in order to cure, but thermoplastic is a resin that melts without heating and solidifies after cooling. The same basic process is very similar. Inject the original fluid material into the mold under pressure, wait for 1 minute, take out the finished part, and then repeat.

In fact, the reason why medical grade silica gel products are widely used in the medical field is mainly because their own properties are related to structural characteristics. For example, the rubber stopper used for the sealing and packaging of medical drugs requires a certain degree of elasticity, which can still maintain the original tightness and air tightness after acupuncture, and the fragments will not fall. However, the characteristics of silica gel are difficult to meet the current medical needs. It is necessary to modify silica gel or add reagents to change its own shortcomings to meet its medical applications.

At present, silicone rubber and polyurethane are widely used. Polyurethane has good biocompatibility, excellent mechanical properties, easy forming and processing, controllable performance and other advantages. These two materials have good biocompatibility in medicine since ancient times. No matter how, medical grade silicone parts can also be called medical silicone, but medical silicone cannot be called medical silicone. If the safety level is required to be very high, please be sure to confirm whether there is a biocompatibility report or other medical level reports.