Custom Rubber Stopper
Color, size, and formula - every part of your rubber stopper can be built to
your exact specification, backed by our own compounding and molding capabilities.
A rubber stopper is a small component with a big responsibility - it's the barrier between your product and the outside environment. Our custom rubber stoppers are built entirely around your specification, from the color and dimensions to the rubber formula itself. As a rubber stopper manufacturer and supplier with in-house compounding and tooling, we can match your exact requirements rather than fitting you into a catalog size.
Full Customization Options
Three core areas of the stopper can be tailored to your exact requirements.
custom color
Gray, black, or any custom color for product identification and brand consistency across your line.
custom size
Matched to standard vial neck diameters or built to your own non-standard dimensions.
custom formula
Rubber compound formulated to your requirements - hardness, elasticity, and chemical resistance tuned to your product.
Available Sizes
Standard neck diameters we manufacture as part of this category. Custom sizes available on request.
| Size | Common Use |
|---|---|
| 13mm | Standard injection and freeze-dry vials |
| 20mm | Injectable, serum, and steroid vials |
| 28mm | Larger-volume and multi-dose vials |
| 32mm | Bottles and larger-format containers |
| Custom | Non-standard vial and container necks |
Custom Formula & Material Options
Beyond color and size, we formulate the rubber compound itself to fit your application:
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Butyl and halobutyl rubber compounds for injectable and biologic products
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Custom hardness and elasticity for specific sealing requirements
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Low extractables and leachables formulations for pharmaceutical compliance
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Optional coatings, such as FluroTec or B2 film, to reduce friction on filling lines
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Formulation adjustments for freeze-drying, autoclaving, or repeated needle access
Applications
Our custom rubber stoppers are used across a wide range of industries and products.
Pharmaceutical & injectable vials
Freeze-dried biologics & vaccines
Laboratory sample & reagent bottles
Veterinary injectable products
Serum, cosmetic & specialty liquid bottles
Choosing the right rubber stopper directly affects product shelf life, sterility, and safety. As an experienced rubber stopper factory, we manufacture under strict quality control to ensure consistent dimensions, hardness, and sealing performance across every production batch.
Custom color, size, and formula built to your specification
Medical-grade materials suited for injectable and biologic products
Sample proofs before full production runs
OEM manufacturing with flexible order volumes
rubber bung stopper
freeze-dry vial stoppers
Get Your Custom Rubber Stopper Quote
Tell us your color, size, and formula requirements, and our team will
provide a sample proof, pricing, and production timeline for your custom rubber stoppers.