Description
Product Overview
The Chudeng 20mm Vial Rubber Stoppers are engineered to meet the rigorous demands of modern laboratory environments. Constructed from premium butyl rubber, each stopper delivers a self‑healing, airtight seal that maintains integrity even after repeated cycles of steam sterilization. The material’s exceptional heat stability ensures that the stoppers retain their elasticity and shape, preventing deformation that could compromise experimental results. With a precise 20mm diameter designed to fit openings of approximately 13mm, these stoppers provide a snug fit for a wide range of glass vials, liquid culture jars, and BRF containers. The pack includes 100 individual stoppers, offering ample supply for high‑throughput workflows, bulk ordering, and inventory management. Each stopper is manufactured under strict quality control protocols, guaranteeing consistency in dimensions, hardness, and sealing performance. The product’s specifications include a package dimension of 3.35 x 3.23 x 2.52 inches and a weight of 6.74 ounces, making it easy to store and handle. The stoppers are compatible with standard laboratory equipment, such as syringe needles, injection ports, and filtration systems, facilitating seamless integration into existing protocols.
![[Product front view showing all components]](https://www.imageperfect.store/wp-content/uploads/2026/08/f9ff0e594d414a039c05065f711fc67e.jpg)
Usage
These stoppers excel in a variety of laboratory applications. In microbiology, they are ideal for sealing liquid culture jars, allowing for controlled gas exchange while preventing contamination. Researchers working with mycelium, bacterial cultures, or fungal spores can rely on the self‑healing property to maintain sterility during incubation periods. In pharmaceutical and biotech settings, the stoppers are suitable for securing vials that contain sensitive reagents, ensuring that exposure to ambient air is minimized. The butyl rubber composition tolerates autoclave conditions up to 121°C, enabling users to sterilize the stoppers alongside their containers without compromising seal quality. Additionally, the reusable nature of the stoppers reduces waste and operational costs, aligning with sustainability initiatives in laboratory management. Whether used in small‑scale bench experiments or large‑scale production runs, the stoppers provide consistent performance, making them a versatile choice for researchers, quality control technicians, and production staff alike.
Why Choose Us
Choosing Chudeng as your supplier means partnering with a brand that prioritizes reliability, durability, and customer satisfaction. Our 20mm rubber stoppers undergo rigorous testing for compression set, tensile strength, and chemical resistance, ensuring they meet or exceed industry standards. The self‑healing design reduces the risk of leaks, which is critical for maintaining sample integrity and preventing cross‑contamination. Our commitment to quality is reflected in a 4.5‑star rating from over 750 verified customers, highlighting consistent performance across diverse applications. We also provide responsive technical support, offering guidance on optimal usage, sterilization procedures, and troubleshooting. In the event of any issues, our after‑sales service team is ready to assist with replacements or refunds, reinforcing our confidence in product excellence. By selecting our stoppers, laboratories benefit from reduced downtime, lower consumable costs, and enhanced experimental reproducibility.
Key Features
- Self‑healing butyl rubber creates a reliable airtight seal that resists leakage even after multiple sterilization cycles.
- Heat‑stable composition tolerates autoclave temperatures, allowing steam sterilization without degrading performance.
- Reusable design maintains shape and elasticity, reducing consumable waste and lowering long‑term costs.
- Precise 20mm size fits 13mm openings, ensuring compatibility with standard glass vials, culture jars, and BRF containers.
- Dedicated customer support provides technical assistance, replacement options, and satisfaction guarantees.
FAQ
Can these stoppers be sterilized multiple times?
Yes. The butyl rubber material is specifically formulated to withstand repeated autoclave cycles at 121°C for up to 30 minutes. After each sterilization, the stopper retains its elasticity and self‑healing properties, allowing it to be reused without loss of sealing performance.
What types of containers are compatible with the 20mm stoppers?
The stoppers are designed for containers with a 13mm diameter opening, which includes most standard laboratory glass vials, liquid culture jars, BRF (Brown Rice Flour) jars, and supplement substrate containers. They also work well with injection ports and syringe fittings commonly used in microbiology and biotech workflows.
How does the self‑healing feature work?
The self‑healing property is a result of the butyl rubber’s inherent elasticity. When a needle or probe penetrates the stopper, the material flexes around the insertion point and then returns to its original shape once the instrument is removed, effectively sealing the opening and preventing contamination.
Is there a recommended storage condition for the stoppers?
For optimal longevity, store the stoppers in a cool, dry environment away from direct sunlight and extreme temperature fluctuations. Keeping them in their original packaging until use helps protect the material from dust and moisture, preserving their sealing capabilities.
What should I do if a stopper becomes damaged or loses its shape?
While the stoppers are designed for durability, occasional wear may occur. If a stopper shows signs of permanent deformation or cracking, it should be replaced. Contact our customer service team for assistance; we can provide replacement units or guide you through troubleshooting steps to ensure continued performance.
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