--- product_id: 629599440 title: "20mm Flip Off Caps Burr-Free Flip Top Aluminum-Plastic Caps Single Tone Flip Top Seals for Glass Vial 100 Pcs (20mm, White)" brand: "zhanxubio" price: "€ 25.72" currency: EUR in_stock: true reviews_count: 5 category: "Zhanxubio" url: https://www.desertcart.hr/products/629599440-20mm-flip-off-caps-burr-free-flip-top-aluminum-plastic store_origin: HR region: Croatia --- # Bulk pack of 100 caps Secure 20mm vial fit Burr-free smooth flip top 20mm Flip Off Caps Burr-Free Flip Top Aluminum-Plastic Caps Single Tone Flip Top Seals for Glass Vial 100 Pcs (20mm, White) **Brand:** zhanxubio **Price:** € 25.72 **Availability:** ✅ In Stock ## Summary > 🔐 Flip with confidence — the smooth seal your vials deserve! ## Quick Answers - **What is this?** 20mm Flip Off Caps Burr-Free Flip Top Aluminum-Plastic Caps Single Tone Flip Top Seals for Glass Vial 100 Pcs (20mm, White) by zhanxubio - **How much does it cost?** € 25.72 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/629599440-20mm-flip-off-caps-burr-free-flip-top-aluminum-plastic) ## Best For - zhanxubio enthusiasts ## Why This Product - Trusted zhanxubio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bulk Pack Convenience:** 100 caps per pack to keep your lab or workspace fully stocked and ready for any project. - • **Burr-Free Flip Top Design:** Smooth, burr-free edges prevent cotton swab snags and guarantee safe, clean access to vial contents. - • **Precision 20mm Compatibility:** Engineered to fit all 20mm OD neck serum vials flawlessly, ensuring a professional seal every time. - • **Durable Aluminum-Plastic Build:** Robust hybrid material offers reliable protection without sharp edges or premature tearing. - • **Professional-Grade Seal Integrity:** Designed to maintain sterile conditions with a secure crimp, minimizing risk of contamination or leakage. ## Overview These 20mm flip off caps by ZHANXUBIO provide a burr-free, secure seal for all standard 20mm serum vials. Crafted from durable aluminum-plastic, they ensure safe, clean access with a smooth flip top design. Sold in convenient packs of 100, these caps are essential for professionals seeking reliable vial sealing without sharp edges or premature tearing. ## Description 13/20mm Flip Off Caps Burr-Free Flip Top Caps Aluminum-Plastic Caps Single Tone Flip Top Seals for Glass Vial 100 Pcs by ZHANXUBIO Review: These are perfect, but I wish they weren't necessary. If you have vials to seal, these are better than the ones that rip on their own. As the picture shows, the aluminum does not rip at all, leading to no sharp edges. If you are preparing sterile solutions, these are a must-have over the ones that rip themselves off. Note, however, that they are only the caps. No butyl stopper nor vial. You must get those separately. Review: These sort of items are notorious for not begin precise to either photos or per any sort of specification. 1) the photo shows a 4-tab 'melted plastic fit top' for lack of a better way to describe. They have a 6 tab top which, if they were 'easy' to flip like commercial vials, I would not complain but they are *hard* to flip off leading to perhaps accidental removal of the entire lid. 2) The 'skirt' is the metal aluminum ring on the top. And they are short according to specs (and other tops on desertcart) by about 10 mils. Why the fuss? If you don't do a perfect job of stopper compression and crimping this yields a weak seal which will avulse when popping the hard-to-remove-top (see #1) . These items appear overly critical perhaps but what preventable failure rate do you want on your vials. Failure of this sort should be zero. I had one failure of cracked glass because of need for excessive compressive force to make up for the short cap skirt. Caused grief and loss of almost a day's time plus the embarrassment and stress to speedily get a new vial to a client. The red ones seemed to have this short skirt problem but that is just my experience. ## Features - Quantity: 100 - Material: Aluminum-plastic - Size: 20mm. Used for 20mm vial and 20mm vial crimper - Vial Compatible: All serum vials with 20mm OD neck sizes - Burr-free: The lid is smooth and burr-free after opening,so the cotton swab will not hook when disinfected ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CH3TBDJY | | Best Sellers Rank | 338,606 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 98 in Labware Caps | | Brand | ZHANXUBIO | | Closure Type | Flip Top | | Colour | White | | Country of Origin | China | | Customer Reviews | 3.9 3.9 out of 5 stars (19) | | Is the item dishwasher safe? | No | | Is the item microwaveable? | No | | Item Weight | 0.1 Kilograms | | Manufacturer | ZHANXUBIO | | Material | Aluminium | | Number of Pieces | 100 | | Product Style | Compact | | Shape | Round | | UPC | 768447784418 | ## Product Details - **Brand:** ZHANXUBIO - **Colour:** White - **Item weight:** 0.1 Kilograms - **Material:** Aluminium - **Style:** Compact ## Images ![20mm Flip Off Caps Burr-Free Flip Top Aluminum-Plastic Caps Single Tone Flip Top Seals for Glass Vial 100 Pcs (20mm, White) - Image 1](https://m.media-amazon.com/images/I/61VPSu9kWiL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***A on 28 February 2026* These are perfect, but I wish they weren't necessary. If you have vials to seal, these are better than the ones that rip on their own. As the picture shows, the aluminum does not rip at all, leading to no sharp edges. If you are preparing sterile solutions, these are a must-have over the ones that rip themselves off. Note, however, that they are only the caps. No butyl stopper nor vial. You must get those separately. ### ⭐⭐⭐⭐ Review *by D***J on 13 September 2025* These sort of items are notorious for not begin precise to either photos or per any sort of specification. 1) the photo shows a 4-tab 'melted plastic fit top' for lack of a better way to describe. They have a 6 tab top which, if they were 'easy' to flip like commercial vials, I would not complain but they are *hard* to flip off leading to perhaps accidental removal of the entire lid. 2) The 'skirt' is the metal aluminum ring on the top. And they are short according to specs (and other tops on Amazon) by about 10 mils. Why the fuss? If you don't do a perfect job of stopper compression and crimping this yields a weak seal which will avulse when popping the hard-to-remove-top (see #1) . These items appear overly critical perhaps but what preventable failure rate do you want on your vials. Failure of this sort should be zero. I had one failure of cracked glass because of need for excessive compressive force to make up for the short cap skirt. Caused grief and loss of almost a day's time plus the embarrassment and stress to speedily get a new vial to a client. The red ones seemed to have this short skirt problem but that is just my experience. ### ⭐⭐⭐⭐⭐ Review *by J***Z on 11 February 2026* very nice and clean after removing the cap .. wish they had gray and clear ## Frequently Bought Together - ZHANXUBIO 20mm Vials Caps Burr-Free Aluminum-Plastic Caps for Glass Vial, 100 Pcs (20mm, White) - LabZhang 100pcs 10ml Vials-Glass Clear Bottom Headspace Vial with Plastic-Aluminum Flip Off Caps and Rubber Stoppers,Transparent Glass Headspace Vials,10ml Capacity（Transparent） --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/629599440-20mm-flip-off-caps-burr-free-flip-top-aluminum-plastic](https://www.desertcart.hr/products/629599440-20mm-flip-off-caps-burr-free-flip-top-aluminum-plastic) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-09*