If the rubber stopper were to fail or become loose, the vacuum could be compromised, leading to insufficient blood collection or improper blood volume in the tube. This could lead to inaccurate test results or the need to repeat the blood draw, which could be inconvenient or uncomfortable for the patient.

In addition to maintaining vacuum pressure, the rubber stopper also helps to preserve the integrity of the blood sample by preventing air from entering the tube. This is especially important for certain blood tests, such as those requiring serum or plasma separation, as the air could affect the separation process and alter the results.

In addition to its critical functional roles, the grey rubber stopper is an economical and practical solution for blood collection tubes. Rubber is a relatively low-cost material that is durable and easy to work with during the manufacturing process. This makes it a cost-effective choice for manufacturers of blood collection tubes, contributing to the affordability of the tubes themselves.

Furthermore, the use of rubber stoppers provides a high level of consistency and reliability. The manufacturing process for rubber stoppers is well-established, and modern production techniques ensure that the stoppers are produced with a high degree of precision. This consistency is essential for medical practices, where uniformity and reliability are key to maintaining safety standards.

While the grey rubber stopper's primary function is to ensure the integrity of the blood sample, it also contributes to patient safety and comfort. By securely sealing the blood collection tube, the stopper reduces the risk of spillage during the blood draw process, minimizing the potential for accidents or exposure to bloodborne pathogens.

The design of the rubber stopper also helps make the blood collection process smoother. It provides a secure seal that allows for the proper mixing of additives and blood, which can reduce the need for additional manual steps such as shaking or mixing the tube after the sample is drawn.

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Good formulation technology guarantees excellent leakage of butyl rubber stopper，Leakage <20mg
Ultra-low metal dissolution, can be used for human blood metal detection
Special surface treatment technology eliminates the effects of silicon treatments on blood products .
The most stringent process control ensures the cleanliness of the rubber stopper .