
Our factory develops rubber stoppers to your closure drawing and material requirements. Share the container dimensions, contents and intended access method for a manufacturing review.





Define closure integrity checks in the complete container system.
Specify fragmentation and coring acceptance criteria.
Define the needle and acceptable insertion force.
Specify access count and test resealing in the intended assembly.
Evaluate the selected compound with your formulation.
Confirm the method and cycle for the selected compound.
Performance and compliance are validated to the agreed material, container and sterilization system.
| Material | Primary Benefit | Typical Use | Available Treatment |
|---|---|---|---|
| Bromobutyl Rubber | Evaluate barrier and formulation compatibility | Parenteral vials, lyophilized products | Uncoated / Fluoropolymer laminated |
| Chlorobutyl Rubber | Review the specific compound and contents | Liquid formulations, infusions | Uncoated / Fluoropolymer laminated |
| Silicone-Coated Butyl | Review surface friction and coating requirements | Sensitive formulations, lyophilized products | Silicone coated |
| Fluoropolymer-Laminated Butyl | Review film and formulation compatibility | Formulations requiring a contact-surface review | Fluoropolymer laminated |


Container finish must be within specification.
Check interference and geometry in the intended assembly.
Evaluate crimp compression with the stopper and container.
Neck dimensions, geometry and cleanliness.
Drug-contact safety and extractables profile.
Single-use or multiple accesses.
Moist heat, dry heat or gamma.
Cold chain, ambient or elevated conditions.

Critical dimensions verified to drawing.

Insertion & withdrawal force testing.

Particle and coring assessment.

Multiple access and leak rate evaluation.

Designed to support appropriate studies.

Agree a suitable closure integrity test method.
Testing plans can be developed around applicable pharmacopeia, ISO requirements and customer protocols.
Understand application, regulatory needs and target performance.
Select material, design geometry and surface treatment.
Produce samples for fit, function and evaluation.
Testing support and documentation for qualification.
Agree production controls and batch documentation.
Specify handling and cleanliness requirements.
Agree lot and material identification records.
Documented inspections and test results.
Secure, clean packaging to protect product quality.
Send your closure drawing and requirements to discuss custom manufacturing with our factory.
Get a fast, no-obligation quote from our engineering team.