Product Features
1.Shape Characteristics:The stopper is cylindrical. Its top is a circular flat surface. There’s an "X"-shaped score design on this flat top.This design helps in two ways. On one hand, it makes it easier to puncture the stopper when using a syringe to take out reagents. The needle can go through the stopper more easily. On the other hand, after puncturing, the "X"-shaped score can fit the needle better. This reduces liquid or gas leakage. It also keeps the inside of the bottle in a sealed state.The side of the stopper has a certain taper and texture. This lets it be inserted tightly into the mouth of the reagent bottle—making the sealing effect better. At the same time, it gives a certain amount of friction when you pull the stopper out. This makes operation easier.This structural design matches the precision fitting requirements of Diagnostic Device Gaskets. It also makes sure the stopper works with the standard interfaces of Reagent Container Lids.
2. Functions
1)Sealing Function:This is the main function of the stopper. It fits tightly with the mouth of the reagent bottle. This forms a closed space inside the bottle. It stops the reagent inside from touching external air and moisture.This avoids two problems: reagent deterioration caused by oxidation or deliquescence, and reagent volatilizing into the air (which would cause pollution or waste). Its sealing performance is the same as the core protective role of Sterile Medical Seals—keeping reagents from getting damaged or impure.
2)Contamination Prevention:It can block external impurities from getting into the reagent bottle effectively. Things like microorganisms and dust. This makes sure the reagent stays pure.This is really important for medical testing and pharmaceutical preparations. If there are impurities in the reagent, it may affect the accuracy of test results. It could also be a threat to patients' health. This protective effect helps meet the hygienic requirements of In Vitro Diagnostic (IVD) Equipment Accessories.
3)Puncture Convenience:The "X"-shaped score design on the top makes it easier to puncture the stopper with tools like syringes. What’s more, after being punctured, it can go back to the sealed state better. This stops leakage at the puncture spot. It also makes sure the reagent bottle still has good sealing performance even after being punctured and used many times.This functional advantage makes it different from regular Medical Vial Cap Seals. It meets the frequent sampling needs of IVD scenarios.
3. Required Characteristics
1)Excellent Sealing Performance:The material of the stopper must have outstanding elasticity and flexibility. When it’s in close contact with the bottle mouth, it can form a reliable seal. Even after being used for a long time, it won’t leak because its elasticity gets worse. This performance is as good as that of high-quality IVD Seals. It makes sure reagents can be stored stably for a long time.
2)Chemical Stability:There are many kinds of medical reagents. So the stopper must have good chemical stability. It won’t have chemical reactions with different reagents. It also won’t let out harmful substances that dirty the reagents. For example, it must stand corrosion from strong acidic or strong alkaline reagents. This stability meets the material standards of Medical Grade Silicone Seals and Medical Device Seals.
3)Biocompatibility:In medical use, the stopper needs to touch pharmaceuticals or reagents directly. These substances may later touch the human body. So the stopper must have excellent biocompatibility. It won’t cause bad reactions like allergies or toxicity. This makes sure patients are safe. This is a basic requirement for all Medical Device Seals that touch diagnostic or therapeutic substances.
4)Puncture Resistance and Self-Sealing Property:It must stand being punctured many times without getting damaged. After being punctured, it can quickly go back to the sealed state. This stops reagent leakage and external contamination. This dual property is essential for Reagent Container Lids in high-frequency sampling scenarios. It’s similar to the durability requirements of Diagnostic Device Gaskets.
5)High and Low Temperature Resistance:In some cases, reagent bottles may need high-temperature sterilization or low-temperature storage. So the stopper must keep stable physical and chemical properties in a certain temperature range. For example, from -20℃ to 121℃, or even higher. It won’t have problems like deformation, aging, or becoming brittle. This ability to handle temperature changes is as good as that of Freezer Tube Seals. It lets the stopper adapt to different reagent storage and processing conditions.
