Best Labware Caps of 2026

The OLYCRAFT Resin Bottle Caps come in a set of 30, featuring five different sizes to suit your various needs. With six caps per size, you’ll have plenty for daily use. Made from high-quality plastic, these caps are durable and designed to last, ensuring they won’t break easily. Their versatility allows you to use them for a wide range of items, including condiments, cleaning supplies, and crafting materials. Additionally, they are easy to clean and can be reused, making them an eco-friendly choice for your storage solutions.

The uxcell 24mm Screw Caps come in a pack of 32, offering plenty of replacements for your bottles. Each cap fits bottles with a 24mm neck diameter, so be sure your bottle matches this size before buying to ensure a perfect fit. Made from durable PP plastic, these caps resist high temperatures and chemical corrosion, making them ideal for safely storing chemicals and samples without damage. They screw on easily, creating a tight seal to prevent leaks or evaporation. This means you can trust them to keep your contents secure and fresh with minimal effort.

The DAWNBOX Colorful Silicone Vial Caps make organizing your daily liquids and supplements easy with 14 caps in 7 bright colors, helping you keep track of each day’s contents. These caps fit snugly on 1ml to 3ml glass vials, providing a strong seal that prevents leaks, evaporation, and dust contamination. Made from durable materials, they are easy to clean with just water and can be reused multiple times, saving you money and reducing waste. Designed to keep opened vials fresh, these caps help you avoid wasting liquids and keep your items neatly organized for everyday use.

The EGNGY Silicone Vial Caps are designed to help you keep your partially used liquids safe and fresh by creating a secure double seal that blocks moisture and dust. This means your liquids last longer and you waste less. With 10 different colors, you can easily organize your vials by ingredients, dates, or priority, making your work or storage more efficient. These caps are made from durable silicone, ensuring a tight, leak-proof fit that protects against spills and contamination. Plus, they’re reusable and easy to clean—just rinse and air dry—so you save money and maintain hygiene with ease.

The PATIKIL GL45 Screw Caps are designed to fit GL45 media glass bottles with a 45mm inner diameter, making them perfect for sealing your labware or brewing containers. Made from durable polyethylene, these caps can withstand high temperatures up to 140℃ (284°F), so you can safely autoclave them without worry. Their strong thermal and solvent resistance ensures they hold up well in various environments. Thanks to their tight seal and leakproof design, these caps help prevent liquid evaporation and exposure, giving you peace of mind when storing or transporting your liquids. Plus, the raised ridge around the cap makes it easy to grip and tightly seal your bottles.

The Goqeut 3ml Vial Caps offer reliable protection for your 3ml glass vials, helping you keep your sensitive liquids safe from leaks, air, and moisture. This means your reagents, medicines, or cosmetic liquids stay fresh longer, reducing waste. The caps are easy to use, allowing you to securely seal and open them with just one hand, which is great if you handle vials often. Made from durable materials, these caps can be cleaned easily and reused multiple times without losing their sealing ability. Plus, they fit perfectly on 3ml vials, making them versatile for labs, medical use, or even DIY projects at home.

The Goqeut Glass Vial Caps offer a reliable way to protect your 5-100ml glass vials with a leak-proof design that keeps moisture and contaminants out, helping your liquids stay fresh longer and reducing waste. With eight vibrant colors, you can easily sort and identify your vials by date, ingredient, or priority, making your workspace more organized and efficient. These caps are made from durable, corrosion-resistant materials, so you can clean and reuse them without worry about damage or loss of sealing quality. Plus, they’re simple to snap on and open with one hand, saving you time and effort during frequent use.

The DAWNBOX Silicone Vial Caps offer a colorful and practical way to organize your daily liquids or supplements. With 14 caps in 7 bright colors, you can easily assign a cap to each day of the week, helping you keep track of your routine effortlessly. These caps fit tightly to prevent leaks and keep dust out, ensuring your liquids stay clean and fresh. Made from durable, reusable silicone, they’re easy to wash and use again, saving you money and reducing waste. Plus, they are specially designed to seal opened 5ml to 100ml glass vials, helping you preserve unused contents and avoid waste.

The PATIKIL GL45 Screw Caps are made from durable polyethylene, making them ideal for sealing GL45 media glass bottles. These caps can withstand high temperatures up to 284°F (140°C), so you can safely use them in autoclaving processes without worrying about damage. Their strong thermal and solvent resistance ensures they last longer and keep your liquids secure. Designed with a raised ridge for better grip, these caps make it easy for you to seal your bottles tightly, preventing leaks and evaporation. Whether you’re storing chemicals, beverages, or other liquids, these caps provide a reliable, airtight closure to keep your contents safe and fresh.

The Moonetto GL80 Screw Cap is made from durable polypropylene, which can handle high temperatures up to 140℃, making it safe for sterilization in autoclaves. This means you can easily clean and reuse the cap without worrying about damage. Its size fits standard GL80 neck media bottles, ensuring a secure and reliable fit. The cap includes a silicone ring that creates a tight seal, preventing spills and evaporation. This helps keep your samples safe from moisture and unwanted gases, giving you peace of mind during storage and handling.