Specialized coating applied to pharmaceutical vial rubber stoppers to enhance barrier properties, reduce particulate generation, and improve compatibility with drug formulations.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Adhesion Strength | > 4 N/cm | |
| Coating Thickness | 2-10 μm | |
| Surface Roughness | Ra < 0.5 μm | |
| Temperature Range | -80°C to 121°C | |
| Coating Uniformity | > 95% coverage | |
| Chemical Resistance | pH 2-12 |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
Elastic closure for pharmaceutical vials providing sterile seal and needle penetration.
A high-precision ceramic sphere manufactured as a rolling element for industrial bearings.
A precision-engineered sealing component designed specifically for food and beverage processing equipment.
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3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
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Surface coatings prevent drug adsorption into rubber, reduce extractables/leachables that could contaminate drug products, minimize particulate generation during stopper insertion/removal, and enhance compatibility with sensitive drug formulations.
Fluoropolymers like PTFE and FEP are most common due to their excellent chemical resistance and low surface energy. Silicone-based coatings are also used for specific applications requiring enhanced lubricity.
Properly applied coatings maintain the stopper's sealing capability and elasticity while adding barrier properties. They must not compromise the stopper's ability to maintain container closure integrity.
Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.