1、Shape Characteristics:The product has a circular thin-sheet structure. Its edge has a complete circular ring. This ring fits the circular contour of reagent bottle mouths. It makes installation easy and helps achieve tight sealing.
The center of the seal is designed with radial process lines. These lines make the seal’s structural stability better. They also guide how stress is spread. And they help position the silicone gasket when it’s being assembled.
This structural design matches the precision fitting requirements of Diagnostic Device Gaskets and Medical Grade Silicone Seals. It also works well with the standard interfaces of Reagent Container Lids.
2. Functions
1)Sealing Function:It works as a flexible sealing medium between the reagent bottle cap and the bottle mouth. When pressed, it fills the gaps tightly. This blocks the reagent inside the bottle from touching external air, moisture, and contaminants.This stops two problems: reagent volatilization and reagent deterioration. This is especially important for oxidizable reagents and reagents with precise concentrations. This core function is the same as the protective role of Sterile Medical Seals—keeping reagents from getting damaged or impure.
2)Leakage Prevention Guarantee:In some scenarios—like when reagents are being transported, shaken, or the bottle is turned upside down—the seal uses the elasticity and fit of silicone to stop reagents from leaking. This protects the safety of operators and the environment. It’s especially useful for toxic or corrosive reagents.Its leakage-proof performance meets the strict standards of IVD Seals. It makes sure hazardous diagnostic reagents can be handled without risk.
3)Adaptability and Compatibility:The circular shape fits most standard reagent bottle mouths. For example, 20mm and 30mm calibers. The radial line design helps spread pressure evenly.This means no matter what tightening torque is used, the seal can keep consistent and stable sealing performance. So it’s a versatile choice for various In Vitro Diagnostic (IVD) Equipment Accessories. It also works with the interchangeable use of Reagent Container Lids.
3. Required Characteristics
1)High Sealing Performance:The silicone material of the seal must have low compression set. That means it bounces back well after being pressed, and won’t stop sealing during long-term use. It also needs low gas permeability—so it can block air from getting in.This makes sure reagents can be stored stably for a long time. This performance is as good as that of high-quality Medical Vial Cap Seals. It meets the strict storage requirements of diagnostic reagents.
2)Chemical Stability:It must stand corrosion from reagents. It needs to work with acid-base reagents, organic solvents, and other medical reagents. It also can’t have chemical reactions with reagents. For example, it can’t let out impurities that dirty reagents, and it can’t break down or stop working.Common choices for the material include medical-grade silicone—like FDA-certified silicone. This material meets the standards of Medical Grade Silicone Seals and IVD Seals.
3)Hygienic Safety:It must meet medical or food contact-grade standards. For example, it has to be non-toxic and can’t let out substances that can be extracted. This stops it from dirtying reagents. It also makes sure test or experiment results are accurate.This hygienic requirement is a basic trait of all Medical Device Seals that touch diagnostic samples and reagents.
4)Temperature Resistance:It must adapt to regular temperature changes in laboratories. For example, environments from -20℃ to 60℃. If needed, it also has to stand high-temperature sterilization. It won’t change shape or let out harmful substances during this process.This ability to handle temperature changes is as good as that of Freezer Tube Seals. It lets the seal adapt to both low-temperature storage and high-temperature disinfection of IVD equipment.
5)Tear Resistance and Durability:The seal is often punctured—like by sampling needles. It’s also opened and closed many times. Even so, it must be very hard to tear and not get damaged easily.This makes sure it can still seal well even after being used multiple times. This durability makes the seal last longer. It meets the cost-effectiveness requirements of In Vitro Diagnostic (IVD) Equipment Accessories in high-frequency testing scenarios.
