# APUXON 20mm Butyl Rubber Stoppers, 100 Count | Lab Supply for Liquid Culture Jars **Brand:** APUXON **SKU:** qce1108 **ASIN:** B08P16GRZN **Canonical URL:** https://crowcrowcrow.com/p/vial-rubber-stopper-100pcs-butyl-20mm-medicine-packing-bottle-inner-opening-glass-liquid/qce1108 **Subcategory:** Categories **Availability:** in_stock **Price (INR, all-inclusive):** ₹1,574 **Discount:** 32% **Customer rating:** 4.70/5 from 13 ratings ## Description APUXON 100pcs 20mm butyl rubber stoppers seal liquid culture jars and vials. Made from durable, reusable rubber, they offer high temperature resistance and excellent sealing. Suitable for labs, hospitals, and kitchens, allowing needle injection without removal. Imported from USA, duties included. ## Highlights - Secure Seal for Culture Jars — Butyl rubber construction provides a tight, reliable seal for 20mm glass bottles and liquid culture jars, preventing contamination and leakage. Suitable for laboratory, hospital, and kitchen applications. - Reusable & Washable Design — Made from durable rubber material, these stoppers can be washed and reused multiple times, offering a cost-effective and sustainable solution for your laboratory needs. - High Temperature Resistance — Designed to withstand high temperatures and washing, ensuring consistent sealing performance and prolonging the life of stored materials. Ideal for applications requiring sterilization. - Direct Injection Capability — Allows for injection of culture medium with a needle directly through the stopper without removal, maintaining sterility and simplifying experimental procedures. ## Key features - Made of high quality rubber material, durable, washable and reusable - For 20mm glass bottles and liquid culture bottles, suitable for openings of about 12.5mm in diameter - The culture medium can be injected with injection needle without removing the rubber plug - High temperature resistance and washing resistance can form excellent sealing performance, thus prolonging the service life of the materials in the bottle - Suitable for kitchen, laboratory, hospital, etc. Suitable for liquid culture, injection, dosing tank and cereal masterbatch ## Why choose this product **Reliable Sealing for Critical Applications** — APUXON butyl rubber stoppers offer superior sealing compared to generic alternatives. Their high-temperature resistance and durable construction ensure that your valuable culture media and samples remain uncontaminated and stable. Imported directly from authorized US retailers, these stoppers are factory-sealed and rigorously tested for performance, providing peace of mind for critical laboratory work. **Ideal for Labs & Home Use, Skip if...** — Perfect for research labs, hospitals, and home brewing or science projects. Ideal for sealing vials, culture jars, and dosing tanks. Skip if you require stoppers for wine or beverage bottling, as these are specifically designed for laboratory and medical-grade containment, not for food-grade beverage sealing. ## How to use 1. Choose a glass vial or liquid culture jar with an opening diameter of approximately 12.5mm to ensure a snug fit for the 20mm APUXON rubber stopper. — Select the Right Jar 2. Firmly press the 20mm butyl rubber stopper into the opening of the jar or vial. Ensure it is seated securely to create an airtight and leak-proof seal. — Insert the Stopper 3. For sterile applications, insert a needle directly through the stopper to inject culture medium or other liquids without removing the stopper, maintaining the integrity of the contents. — Perform Injections (If Needed) 4. After use, the stoppers can be washed and reused due to their durable, washable, and high-temperature resistant butyl rubber material. — Clean and Reuse ## Product details | Field | Value | |---|---| | Primary Material | Butyl Rubber | | Key Properties | High temperature resistance, washing resistance, excellent sealing | | Application | Sealing glass vials, liquid culture jars, injection, dosing tanks, cereal masterbatch | | Suitable Bottle Opening Diameter | ~12.5mm | | Reusable | Yes | | Washable | Yes | | Autoclavable | High temperature resistance implies suitability, verify specific temperature limits | | Cost per use | 100 pieces at ₹1,574 — ₹15.74 per stopper | | Brand | APUXON | | Material | Butyl Rubber | | Size | 20mm (fits ~12.5mm opening) | | Quantity | 100 pieces | | Item Package Weight | 0.163 kg (0.36 lb) | | Item Package Dimensions | 17 cm x 11.7 cm x 3.8 cm (6.7 in x 4.6 in x 1.5 in) | | Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers | ## Frequently asked questions ### How do I know which rubber stopper size fits my test tube or flask? Rubber stoppers are numbered by a graduated size system, and each number maps to a top and bottom diameter in millimetres. Measure the inner mouth diameter of your tube, flask, or bottle in mm and pick the stopper whose bottom (smaller) diameter is slightly larger so it wedges to form a seal. These APUXON stoppers are 20mm, fitting openings of about 12.5mm. ### Can these rubber stoppers be autoclaved and reused? These APUXON stoppers are made of butyl rubber and offer high temperature resistance, suggesting suitability for autoclaving. However, always verify the specific maximum temperature tolerance for your sterilization process to ensure optimal performance and longevity. ### Are these APUXON stoppers suitable for food or beverage sealing? No, these APUXON 20mm butyl rubber stoppers are specifically designed for laboratory and medical applications like liquid culture jars and vials. They are not intended for sealing wine bottles or food-grade beverage containers. ### How do I buy an original APUXON rubber stopper in India? Purchase APUXON rubber stoppers directly from crowcrowcrow.com. We import original products from authorized US retailers, ensuring they are factory-sealed and delivered to India with all customs duties and GST pre-paid. Your order is shipped via ExpressBox tracked delivery. ### What are the benefits of butyl rubber stoppers? Butyl rubber offers excellent resistance to high temperatures, ozone, and weathering, making these stoppers highly durable and reusable. They provide a superior seal compared to natural rubber, prolonging the life of materials stored in vials and culture jars. ### Are these stoppers safe for laboratory use? Yes, APUXON butyl rubber stoppers are designed for laboratory use, offering reliable sealing and high-temperature resistance. They are suitable for various applications including liquid culture, injection, and dosing, ensuring the integrity of your experiments. ### What is the best lab supply for sealing culture jars? For sealing culture jars, APUXON 20mm butyl rubber stoppers are an excellent choice. They provide a high-temperature resistant, reusable seal that allows for needle injection without removal, maintaining sterility for your liquid cultures. ### Can I use these stoppers for injection purposes? Yes, these APUXON stoppers are designed to allow injection of culture medium using a needle directly through the stopper without removal. This feature is crucial for maintaining sterility in laboratory and medical applications. ## Compliance No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging. ## Images 1. https://images.crowcrowcrow.com/B08P16GRZN-0.webp 2. https://images.crowcrowcrow.com/B08P16GRZN-3.webp 3. https://images.crowcrowcrow.com/B08P16GRZN-6.webp 4. https://images.crowcrowcrow.com/B08P16GRZN-9.webp 5. https://images.crowcrowcrow.com/B08P16GRZN-12.webp 6. https://images.crowcrowcrow.com/B08P16GRZN-15.webp --- Source: https://crowcrowcrow.com/p/vial-rubber-stopper-100pcs-butyl-20mm-medicine-packing-bottle-inner-opening-glass-liquid/qce1108 Returns: 14 days, free pickup, full refund on genuine issues. Shipping: Free across India, 15-17 days. Prices are all-inclusive (duties + GST).