Structured Manufacturing Data (2026)

Aluminum Shell

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Aluminum Shell used in the Fabricated Metal Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

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

The outer protective casing component of a pharmaceutical vial aluminum seal

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Product Specifications

Technical details and manufacturing context for Aluminum Shell

Definition
The aluminum shell is the rigid outer casing that forms the structural component of a pharmaceutical vial aluminum seal. It provides mechanical protection, maintains seal integrity, and serves as the primary barrier against environmental factors while containing the inner sealing materials.
Working Principle
The aluminum shell functions as a protective enclosure that houses the inner sealing components (such as rubber stoppers or liners) of a pharmaceutical vial seal. It maintains dimensional stability, provides tamper evidence when crimped onto the vial, and protects the sterile barrier system from physical damage during handling, transportation, and storage.
Common Materials
Aluminum alloy
Technical Parameters
  • Diameter and height specifications for proper fit with pharmaceutical vials (mm) Per Request
Components / BOM
  • Skirt Part
    The vertical side wall that extends downward to engage with the vial neck
  • Top Panel Part
    The flat upper surface that provides structural integrity and tamper evidence
  • Sealing Edge Part
    The lower rim that crimps onto the vial to create a secure seal

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Aluminum Shell.

pharmaceutical vial aluminum seal shell aluminum alloy vial seal casing protective aluminum shell for pharmaceutical seals custom aluminum seal components manufacturing medical vial aluminum shell specifications

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 2 bar (handles vial pressurization during capping)
other spec: Slurry concentration: N/A (dry component, no flow applications)
temperature: -40°C to 150°C (typical pharmaceutical sterilization range)
Media Compatibility
✓ Pharmaceutical-grade aluminum alloys (e.g., 1100, 3003) ✓ Sterilization environments (autoclave, gamma irradiation) ✓ Cleanroom assembly conditions (ISO Class 5-7)
Unsuitable: Highly acidic or alkaline solutions (pH <4 or >10) causing corrosion
Sizing Data Required
  • Vial neck outer diameter (critical for interference fit)
  • Seal cap height requirement (determines shell depth)
  • Required tamper-evidence band dimensions

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Galvanic corrosion
Cause: Direct contact with dissimilar metals in corrosive environments, creating electrochemical potential differences that accelerate aluminum dissolution
Stress corrosion cracking
Cause: Combination of tensile stress (from assembly, thermal cycling, or mechanical loads) and corrosive environment (chlorides, acids) leading to crack propagation in aluminum microstructure
Maintenance Indicators
  • White powdery deposits or pitting on surface indicating active corrosion
  • Audible cracking or popping sounds during thermal cycling indicating stress relief or crack propagation
Engineering Tips
  • Apply appropriate isolation barriers (gaskets, coatings, or non-conductive spacers) between aluminum and dissimilar metals to prevent galvanic corrosion
  • Implement controlled thermal cycling procedures and stress relief annealing during manufacturing to minimize residual stresses that contribute to stress corrosion cracking

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ASTM B209 - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate EN 755-2 - Aluminum and aluminum alloys - Extruded rod/bar, tube and profiles
Manufacturing Precision
  • Wall Thickness: +/-0.1mm
  • Surface Flatness: 0.05mm per 100mm
Quality Inspection
  • Dimensional Verification with CMM
  • Eddy Current Testing for Surface Cracks

Factories Producing Aluminum Shell

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.

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Frequently Asked Questions

What are the main components of this aluminum shell?

The aluminum shell consists of three key BOM components: the sealing edge for secure closure, the skirt for structural support, and the top panel that provides the primary protective surface.

Why is aluminum alloy used for pharmaceutical vial seals?

Aluminum alloy offers excellent corrosion resistance, lightweight durability, and reliable sealing properties, making it ideal for protecting pharmaceutical contents from contamination and environmental factors.

Can these aluminum shells be customized for specific vial sizes?

Yes, our fabricated metal manufacturing process allows for customization of dimensions, thickness, and specifications to match various pharmaceutical vial requirements and sealing systems.

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 Fabricated Metal Product 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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