Coated brominated butyl rubber stopper is a specialized closure system commonly used in pharmaceutical and biotech applications, particularly for sealing vials, bottles, or other containers that store sensitive substances like vaccines, injectable drugs, or biologics. The brominated butyl rubber provides excellent properties, while the coating enhances performance and compatibility with the stored product.
No. | Rubber stopper name | Specification | Application |
1 | Halogenated butyl rubber plug for injection | 32A(DIN), 32A(ISO), 31A, 28B, 28B1, 28B-3, 26B, 26B1, 26BF, 26BF-2, 25A-3, 25B, 24B, 24BF, 22B, etc. | Large volume parenteral |
2 | Halogenated butyl rubber plug for sterile powder for injection | 13A, 13AF, 20A, 21A1, 20A2, 20AF, 20AK, 20B2, 20BF, 20B2-1, 20B2-2, 20B2-3, etc | Large volume parenteral |
3 | Brominated butyl rubber piston | 0.5ml, 1ml, 2ml, 2.25ml, 3ml, 5ml, 10ml, 15ml, 20ml, etc | Prefilled Syringe |
4 | Halogenated butyl rubber plug | D4, K2, K3, K13, Z14, K15, K16, K16J, K17, B2, E3, F1, Y16, Y16B, G4, G5, etc | Vacuum blood collection |
5 | Halogenated butyl rubber plug | 13D1, 13D1-2, 13D1Y, 13D2, 13D2-4, 13D4, 20D1-1, 20D2, 20D2-1, 20D3, 20D4, etc | Lyophilized drugs for injection |
6 | Halogenated butyl rubber plug | 13A, 13AF, 20A, 21A1, 20A2, 20AF, 20AK, 20B2, 20BF, 20B2-1, 20B2-2, 20B2-3, etc. | Sterile powder for injection |
7 | Polyisoprene rubber gasket | 12H, 12C, 13PP, 18PP, 19PP, 19A, 21PP, 21PP-2, 21PP-Y, 22PP, 22PP-1, 22PP-2, 25PP, 30PP, etc. | Pharmaceutical purpose |
8 | Coated halogenated butyl rubber plug |
Jiangsu Best New Medical Materials Co., Ltd., as a holding subsidiary of Shijiazhuang No.4 Pharmaceutical Co., Ltd. (a listed company in Hong Kong), is a national high-tech enterprise specializing in research and development, manufacturing and sales of new medical (pharmaceutical) packaging materials including butyl rubber plugs (film-cladded plug and film-coated plug), gasket, multi-layer co-extruded infusion film (including UV colored film), multi-layer co-extruded biological film, and disposable infusion packaging material(cap, port, hang ring etc.) it is a listed enterprise on NEEQ market (Best Medical Materials 873710). At present, the company has some production bases, a rubber plug division, a co-extrusion film division, and it maintains industry-university-research cooperation with several colleges and universities. The company is the executive director unit of China National Pharmaceutical Packaging Association, the director unit of Pharmaceutical Rubber Plug Committee, and the president unit of Jiangsu Pharmaceutical Packaging & Excipients Association.
As a leading enterprise in the pharmaceutical packaging cap industry in China. We are capable of offering the most various kinds of caps. With nearly 20 years of production, R&D, Our well-equipped facilities and excellent quality control throughout every stage of production enable us to ensure a good quality of all products and enjoy customers` satisfaction.
Key Features of Coated Brominated Butyl Rubber Stoppers:
1. Material Properties:
- Brominated Butyl Rubber: Offers superior gas impermeability (especially to oxygen and moisture), chemical resistance, and elasticity. The bromination process improves the rubber's curing properties and adhesion to other materials.
- Coating: A thin layer of polymer is applied to the rubber surface to reduce interactions between the stopper and the drug product.
2. Advantages:
- Reduced Extractables and Leachables:
- Improved Compatibility:
- Enhanced Sterilization:
- Reduced Particulate Matter:
3. Applications:
- Pharmaceutical vials for injectable drugs.
- Vaccine storage and delivery systems.
- Lyophilization (freeze-drying) applications.
- Biotech and biologic drug storage.
4. Common Coatings:
- Fluoropolymer Coatings:
- Silicone Coatings:
- Other Inert Polymers:
Why Use Coated Brominated Butyl Rubber Stoppers?
- They provide a reliable seal for sensitive drug products.
- They reduce the risk of drug-rubber interactions, which is critical for maintaining product stability and efficacy.
- They are widely used in the pharmaceutical industry due to their proven performance and compliance with regulatory requirements.
















1. Sample is available for you to test quality and market.
2. OEM Services: 15 years OEM service, customer's design is accepted.
3. Factory Audit and Trade Fair Meeting are warmly welcomed.
Q1: Why choose Jiangsu Best?
A1: Jiangsu Best is a leading factory in pharmaceutical packaging material and consumable field with 20 years experiences.
Q2: Can you provide samples?
A2: Yes, we'd like to provide free samples.
Q3: What's your minimum order quantity?
A3: The MOQ depends on the product you buy, we also accept trial orders.
Q4: May I have a tour of your factory?
A4: Welcome to visit our factory, located in Jiangsu province. Pls contact us and we will arrange the most suitable time for you.
Q5: How long is your delivery time?
A5: It depends on the products and quantity of your request. Generally 15~20 days lead time after signing the contract and receiving the deposit.
Q6: Can you provide customized services?
A6: Yes, we have more than 20 years of experience. Jiangsu Best has its own R&D team.
Q7: Do your products comply with international certifications?
A7: Jiangsu Best has been approved by ISO 15378, ISO 14001, ISO 9001, and ISO 45001. DMF is certified by the FDA.