Our 20mm rubber plugs are precision-molded to fit standard laboratory vials and bottles, forming a tight, consistent seal that protects contents from contamination, moisture, and air exposure. Manufactured from medical-grade butyl or halobutyl rubber compounds, these plugs maintain elasticity across a wide range of storage conditions and resist coring during repeated needle or syringe access.

Suited for laboratory reagents, sample storage, injectable products, and other applications requiring a dependable 20mm seal, our rubber plugs are built for consistent dimensions and hardness across every production batch.

On top of the rubber plug, our 20mm tear-off caps provide the visible, tamper-evident finishing layer. Built with an aluminum-plastic construction, the aluminum ring crimps securely around the vial neck while the plastic center tears away cleanly in a single motion - no tools needed, no sharp edges left behind.

Every tear-off cap can be fully customized with your own embossed logo, brand name, or wording, molded directly into the cap top rather than printed on the surface. This gives your product a permanent, tamper-evident brand mark that holds up through shipping, storage, and handling.

Molded solid color for consistent, long-lasting appearance.

Your logo, wordmark, or name pressed directly into the cap top.

Convex or concave design options for your specific artwork.

Sized to match standard crimp vial necks.

Secure crimp seal with a clean, one-motion tear-off action.

Dedicated tooling built to reproduce your exact design, batch after batch.