Aluminum Seals & Closures

It’s critical for our healthcare and pharmaceutical customers to have confidence in the integrity of their products. Assem-Pak | Aluseal is an essential partner for manufacturing high-quality aluminum closures and seals for our customers’ vial containers. Our customers can trust their products will be securely sealed and uncompromised until they reach their final user.

needle extracting liquid from glass vial


We offer our aluminum seals and closures in various sizes, types, and colors. All of our products are made-to-order for each customer’s needs without minimum order requirements. We utilize our flexible manufacturing capacity to respond to customer requests with short lead times and quick product turnaround.

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  • 8mm
  • 11mm
  • 13mm
  • 17mm
  • 20mm
  • 28mm
  • 30mm


  • Center hole
  • Center tear
  • Full tear
  • Solid top
  • Flip top
  • Ring tear


  • Embossed
  • 25 solid colors
  • 6 striped colors
  • Custom colors
collection of liquid-filled glass vials with aluminum caps


We understand that some products may require more specific aluminum closures or seals for a product launch or unique application. Our diverse manufacturing capabilities and access to a broad range of components enable us to serve your individual needs adequately.

Learn About Our Customized Solutions

Get the most reliable aluminum closures for your products.

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