13mm 20mm Rubber Plug Pharmaceutical Rubber Stopper


13mm & 20mm Pharmaceutical Butyl Rubber Stopper – Medical-Grade Closure for Glass Vials

High-Quality, Self-Healing Rubber Stoppers for Injectable Medications and Biopharmaceuticals

Designed for use in pharmaceutical primary packaging, the 13mm and 20mm Butyl Rubber Stopper from PharGlass provides a reliable, sterile-seal closure solution for glass vials containing injectable drugs, vaccines, biologics, and lyophilized products. Crafted from medical-grade butyl rubber, these stoppers feature self-healing properties that ensure a tight seal after needle penetration — minimizing product leakage and contamination risk.

Available in multiple sizes (13mm, 20mm, 26mm, 28mm, 32mm), with customizable colors (gray, red, or per customer request), this high-performance rubber plug is ideal for both OEM and ODM applications in the global pharmaceutical industry.

Manufactured in Henan, China, under ISO 9001:2008 / ISO 14001:2004 / OHSAS 18001:1999 certified facilities, our stoppers meet international standards including USP <661>, EP 3.1.9, JP XVII, and FDA 21 CFR 177.1520, ensuring compliance with global regulatory requirements.


✅ Key Features:

FeatureDescription
MaterialMedical-grade Butyl Rubber (Bromobutyl or Chlorobutyl available)
Self-Healing DesignRe-seals automatically after needle puncture, preventing leakage
Low ExtractablesMinimizes leachables and extractables to protect sensitive formulations
Excellent Seal IntegrityEnsures long-term protection against moisture and microbial ingress
Customizable SizesAvailable in 13mm, 20mm, 26mm, 28mm, 32mm
Color OptionsGray, Red, or Custom (based on client specification)
OEM/ODM SupportYes – custom size, color, surface treatment, logo printing
Free Sample PolicyFree samples available for quality evaluation

Product Specifications

ParameterSpecification
Product Name13mm 20mm Rubber Plug Pharmaceutical Rubber Stopper
Model Number03
Brand NamePharGlass
MaterialButyl Rubber (Bromobutyl or Chlorobutyl optional)
ColorGray, Red, or Customer Request
Size Options13mm, 20mm, 26mm, 28mm, 32mm
Place of OriginHenan, China
UsagePrimary packaging for glass vials (injectables, biologics, vaccines)
Processing ServiceMoulding
PackagingPlastic Bag + Carton
MOQ10,000 pcs
Sample AvailabilityFree Samples
OEM/ODM SupportAcceptable
FeatureMedical Grade, Self-Healing, Low Extractables
Single Package Size10×20×15 cm
Gross Weight1.000 kg per unit
Standards ComplianceISO 9001:2008, ISO 14001:2004, OHSAS 18001:1999
Regulatory StandardsUSP <661>, EP 3.1.9, JP XVII, FDA 21 CFR 177.1520

Technical Insights & Industry Applications

🔬 Why Choose Butyl Rubber Stoppers?

Butyl rubber is widely recognized in the pharmaceutical industry for its:

  • Exceptional impermeability to gases (especially oxygen and water vapor)
  • Low permeation rate, ideal for long-term storage
  • Good elasticity and resilience, ensuring consistent sealing performance

According to research published in Journal of Pharmaceutical Sciences, butyl rubber stoppers significantly reduce drug degradation caused by oxidation, especially in sterile injectable solutions y lyophilized powders.

Note: For freeze-dried (lyophilized) products, we recommend chlorobutyl rubber due to its superior moisture barrier y low extractables profile.


Ideal Applications:

Pharmaceutical Packaging

  • Injectable medications (e.g., insulin, monoclonal antibodies)
  • Vaccines and biologics
  • Lyophilized (freeze-dried) products
  • Pre-filled syringe systems

Biotechnology & Research

  • Lab sample storage
  • Stability testing vials
  • Clinical trial packaging

Cosmetics & Aromatherapy (with non-injectable use)

  • High-end essential oil bottles
  • Premium skincare serums

¿Por qué elegir PharGlass?

En PharGlass, we specialize in providing customized, high-quality primary packaging solutions for the global pharmaceutical and cosmetic markets. Our rubber stoppers are manufactured using advanced molding technology and undergo strict quality control, including:

  • Extractables & Leachables (E&L) testing
  • Visual inspection (no defects)
  • Seal integrity and puncture resistance testing
  • COA, DMF, and TDS documentation support

We offer full OEM/ODM services, including:

  • Custom sizing and shape
  • Logo printing via hot stamping or silk screen
  • COA and technical data sheet (TDS) provision
  • Fast sample delivery within 3–5 days

Whether you’re developing a new biologic drug or launching a premium skincare line, our medical-grade rubber stoppers ensure your product remains protected, stable, and compliant.


📞 Contact Us Today
For pricing, technical documentation, or custom design requests — reach out to our sales team at sales@pharglass.com or visit https://www.pharglass.com.


Note: All products are produced under cleanroom conditions and can be sterilized via gamma irradiation or autoclave upon request. We recommend chlorobutyl rubber for freeze-dried applications and butyl rubber for general injectables.


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