These caps are ideal for replacing worn or vial seals, allowing the continued protection of the vial's contents. The plastic and aluminum construction offers a balance of strength and flexibility, making them easy to apply and remove. Their compatibility with standard glass vials makes them a versatile choice for various applications. Features Suitable bottle outer diameter: 1.3cm -Color:Blue -Material:Aluminum plastic composite -Size:1.40X1.40X0.70cm/0.55X0.55X0.28in -Userfriendly flip design: the fliptop cap features a userfriendly design that allows for easy and quick sealing of vials -Secure seal: crafted from aluminum plastic composite, these vial replacement caps provide a secure seal, effectively preventing any liquid from leaking -Preserves freshness: the airtight seal of these glass vial replacement stoppers helps in maintaining the freshness and quality of the product inside -Wide range of uses: suitable for glass bottle caps, these flips top caps are ideal for use in cosmetics, pharmaceuticals, and food industries -Robust: built to last, these caps allow the safety of the products they seal, offering dependable performance Package list: 400 vial seals