Structured Manufacturing Data (2026)

Pharmaceutical Vial Aluminum Seal

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Pharmaceutical Vial Aluminum Seal used in the Pharmaceutical and Medicinal Chemical Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Pharmaceutical Vial Aluminum Seal is characterized by the integration of Aluminum Shell and Protective Coating. In industrial production environments, manufacturers listed on CNFX commonly emphasize aluminum alloy construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Aluminum crimp seal for pharmaceutical vials and bottles.

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Product Specifications

Technical details and manufacturing context for Pharmaceutical Vial Aluminum Seal

Definition
A precision-manufactured aluminum component designed to securely seal pharmaceutical vials and bottles after filling. It is crimped around the vial's rubber stopper or directly onto the glass neck to create a hermetic seal, protecting the contents from contamination and tampering. These seals are essential for maintaining sterility and product integrity throughout the supply chain, from manufacturing to end-user administration. They are produced in various diameters and styles to match international vial standards.
Working Principle
The aluminum seal is mechanically crimped onto the vial's finish, compressing an underlying rubber stopper or forming a direct metal-to-glass seal to ensure containment.
Common Materials
aluminum alloy, protective lacquer coating
Technical Parameters
  • Overall seal height (mm) Customizable
  • Inner diameter to fit vial neck (mm) Customizable
Components / BOM

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pharmaceutical Vial Aluminum Seal.

aluminum flip-off seal vial crimp cap pharmaceutical vial aluminum crimp seal aluminum alloy vial seal pharmaceutical protective lacquer coated vial seals pharmaceutical bottle aluminum flange seals sterile vial aluminum crimp caps

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 2 bar internal pressure
other spec: Requires proper crimping force (typically 20-40 N·m) for seal integrity
temperature: -40°C to 121°C (sterilization range)
Media Compatibility
✓ Sterile injectable solutions ✓ Lyophilized powders ✓ Vaccines
Unsuitable: Highly acidic or alkaline solutions (pH <4 or >9)
Sizing Data Required
  • Vial neck outer diameter (mm)
  • Required seal height (mm)
  • Crimping equipment compatibility

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Seal Integrity Loss
Cause: Improper crimping force during application leading to micro-fractures or incomplete closure, compromising sterility barrier
Corrosion Pitting
Cause: Exposure to aggressive cleaning agents or atmospheric contaminants causing localized aluminum degradation and seal failure
Maintenance Indicators
  • Visible discoloration or white powdery residue on seal surface indicating corrosion
  • Audible hissing or popping sounds during vial handling suggesting compromised seal integrity
Engineering Tips
  • Implement torque-controlled crimping equipment with regular calibration to ensure consistent seal application without over/under-compression
  • Establish controlled storage environment with humidity below 60% RH and temperature stability to prevent aluminum oxidation and seal degradation

Compliance & Manufacturing Standards

Reference Standards
ISO 8362-1:2018 - Injection containers and accessories - Part 1: Injection vials made of glass tubing ASTM E438-92(2018) - Standard Specification for Glasses in Laboratory Apparatus USP <381> - Elastomeric Closures for Injections
Manufacturing Precision
  • Seal Diameter: +/-0.05mm
  • Crimp Height: +/-0.1mm
Quality Inspection
  • Leak Test (Vacuum Decay Method)
  • Seal Integrity Test (Dye Penetration Method)

Factories Producing Pharmaceutical Vial Aluminum Seal

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

Frequently Asked Questions

What are the benefits of using aluminum seals for pharmaceutical vials?

Aluminum seals provide excellent barrier properties against moisture and contaminants, ensure tamper-evident security, and maintain sterility for pharmaceutical products.

What types of flange configurations are available for these aluminum seals?

We offer various flange types including standard, flip-off, and tear-off designs to accommodate different vial and bottle applications in pharmaceutical manufacturing.

How does the protective lacquer coating enhance the aluminum seals?

The protective lacquer coating prevents corrosion, improves chemical resistance, and ensures compatibility with various pharmaceutical formulations while maintaining seal integrity.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Pharmaceutical and Medicinal Chemical Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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