Editorial Technical Reference

Pharmaceutical Vial Aluminum Seal

This page explains how Pharmaceutical Vial Aluminum Seal is classified within Pharmaceutical Preparation Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The Pharmaceutical Vial Aluminum Seal is a precision-manufactured component used in pharmaceutical preparation manufacturing to securely close vials and bottles after filling.

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Product Specifications

Technical details and manufacturing context for Pharmaceutical Vial Aluminum Seal

Definition

The Pharmaceutical Vial Aluminum Seal is a precision-manufactured component used in pharmaceutical preparation manufacturing to securely close vials and bottles after filling. It is crimped around the vial's rubber stopper or directly onto the glass neck, creating a hermetic seal that protects the contents from contamination and tampering. This seal is essential for maintaining sterility and product integrity throughout the supply chain, from manufacturing to end-user administration. The seal is produced in various diameters and styles to match international vial standards, with an inner diameter range of 13–30 mm and an overall height of 10–20 mm. It is made from aluminum alloy grade 8011 (per GB/T 3198) and features a protective lacquer coating. The flange type is specified as 20, and the thickness ranges from 0.20 to 0.25 mm. Tolerances are ±0.1 mm (ISO 2768-m), and the operating temperature range is -40 to 121 °C. Surface finish is Ra 0.8–1.6 μm, and weight ranges from 1.0 to 2.5 g. Packaging quantities are 1000–5000 pieces per bag, suitable for cleanroom use. These seals are designed for automated capping lines, ensuring precision and reliability. When selecting a seal, verify the specific vial neck finish, required flange style, and compatibility with sterilization processes. Always confirm model-specific values and standards with the legal manufacturer or supplier, as the listed parameters are reference ranges for directory purposes.

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. This action ensures a hermetic closure that prevents leakage, contamination, and tampering. The crimping process deforms the aluminum flange around the vial neck, creating a tight, permanent seal. The protective lacquer coating enhances corrosion resistance and maintains seal integrity. The seal's dimensions and tolerances are critical for proper fit and function on automated capping equipment. The operating principle relies on the mechanical deformation of the aluminum to achieve a secure, tamper-evident closure that maintains sterility until the point of use.

Common Materials

aluminum alloy, protective lacquer coating

Technical Parameters

Parameter	Typical range	Notes & selection driver
Inner DiameterRequired	13–30 mm	Diameter to fit specific vial neck finish
Flange TypeRequired	20 text	Style of crimping flange (e.g., plain, tear-off)
Material GradeRequired	8011 text	Aluminum alloy specificationGB/T 3198
Thickness	0.20–0.25 mm	Ensures seal integrity
Overall Height	10–20 mm	Fits standard vial heights
Tolerance	±0.1 mm	Precision for automated cappingISO 2768-m
Operating Temperature	-40–121 °C	Sterilization compatibility
Pressure Rating	1.0–1.6 MPa	Below 1.0 MPa seat load insufficientISO 5208
Surface Finish	Ra 0.8–1.6 μm	Prevents contamination
Weight	1.0–2.5 g	Affects handling and cost
Packaging Quantity	1000–5000 pcs/bag	Cleanroom compatible packaging

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Aluminum Shell
Primary structural and sealing body

Material: Aluminum Alloy
Protective Coating Part
Prevents corrosion and drug interaction

Material: Lacquer / Epoxy

Industry Taxonomies & Aliases

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

Manufacturers of Pharmaceutical Vial Aluminum Seal

Manufacturer profiles associated with Pharmaceutical Vial Aluminum Seal.

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Frequently Asked Questions

What is the purpose of the aluminum seal on a pharmaceutical vial?

The aluminum seal is crimped onto the vial to secure the rubber stopper and create a hermetic closure, protecting the contents from contamination and tampering, and maintaining sterility.

What materials are used in the seal?

The seal is made from aluminum alloy grade 8011, per GB/T 3198, and has a protective lacquer coating to enhance corrosion resistance.

What are the typical dimensions and tolerances?

The inner diameter ranges from 13 to 30 mm, overall height from 10 to 20 mm, thickness from 0.20 to 0.25 mm, with a tolerance of ±0.1 mm (ISO 2768-m).

How should I verify the seal's suitability for my application?

You must confirm the specific vial neck finish, flange type, and operating conditions with the legal manufacturer or supplier, as the listed parameters are reference ranges.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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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)