---
title: "Pharmaceutical Vial Rubber Stopper"
industry: "Pharmaceutical Preparation Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PHARMACEUTICAL_VIAL_RUBBER_STOPPER"
  data_integrity_hash: "178b7c61fecd6602dd653525c627f8f1"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:PHARMACEUTICAL_VIAL_RUBBER_STOPPER"
  data_source_uri: "https://cnfx.com/llms/industry/pharmaceutical-preparation-manufacturing/product/pharmaceutical-vial-rubber-stopper.md"
  official_resource_url: "https://cnfx.com/industry/pharmaceutical-preparation-manufacturing/product/pharmaceutical-vial-rubber-stopper"
  is_verified_logic: true
attributes:
  diameter:
    status: "config-dependent"
    typical_range: "0.1-3.0 MPa compression pressure, -40°C to 121°C temperature"
    unit: "mm"
  thickness:
    status: "config-dependent"
    typical_range: "0.1-3.0 MPa compression pressure, -40°C to 121°C temperature"
    unit: "mm"
  shore_hardness:
    status: "config-dependent"
    typical_range: "0.1-3.0 MPa compression pressure, -40°C to 121°C temperature"
    unit: "Shore A"
engineering_limits:
  max_safe_operating_point:
    value: 7
    unit: "MPa"
    consequence: "Polymer chain scission due to gamma radiation sterilization at 25 kGy causing cross-link degradation, cyclic compression fatigue at 0.5 Hz frequency leading to Mullins effect in filled elastomers"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Siliconization level below 0.2 mg per stopper surface"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Automated optical inspection with 10 μm resolution detecting coating defects, plasma treatment achieving 38 mN/m surface energy"
  - node_2:
      trigger: "Moisture vapor transmission rate exceeding 0.5 g/m²/day at 25°C/75% RH"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Multi-layer construction with 0.05 mm fluoropolymer barrier, helium leak testing at 1×10⁻⁶ mbar·L/s sensitivity"
bom_nodes:
  sealing-flange:
    type: "part"
    urn: "URN:CNFX:ME:SEALING_FLANGE"
    interface_type: "physical-logic-coupled"
  penetration-zone:
    type: "component"
    urn: "URN:CNFX:ME:PENETRATION_ZONE"
    interface_type: "physical-logic-coupled"
  surface-coating:
    type: "component"
    urn: "URN:CNFX:ME:SURFACE_COATING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 8871-1:2003 ELASTOMERIC PARTS FOR PARENTERALS AND FOR DEVICES FOR PHARMACEUTICAL USE"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/pharmaceutical-preparation-manufacturing/product/pharmaceutical-vial-rubber-stopper.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a571ac15197f354f725ee3ea7c7cb6cd1959f36dc32f3577637144b79b2dcc6b"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Pharmaceutical Vial Rubber Stopper

## 1. Technical Definition
Elastic closure for pharmaceutical vials providing sterile seal and needle penetration.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-3.0 MPa compression pressure, -40°C to 121°C temperature**. Failure boundary: **Compression set exceeding 25% per ASTM D395, tensile strength below 7 MPa per ASTM D412, glass transition temperature (Tg) of -55°C for butyl rubber**, Mechanism: **Polymer chain scission due to gamma radiation sterilization at 25 kGy causing cross-link degradation, cyclic compression fatigue at 0.5 Hz frequency leading to Mullins effect in filled elastomers**.

### 2.1 Analytical Physics Model
Governed by the **Hansen Solubility Distance (HSP)**:

> **Primary Equation**: $R_a = \sqrt{4\Delta\delta_d^2 + \Delta\delta_p^2 + \Delta\delta_h^2}$  
> **Engineering Impact**: Predicts seal/gasket swelling when exposed to CIP chemicals.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| \delta_d | Dispersive | Engineering Constant |
| \delta_p | Polar | Engineering Constant |
| \delta_h | Hydrogen | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Siliconization level below 0.2 mg per stopper surface | 8 | Increased insertion force exceeding 50 N causing vial neck fracture | Automated optical inspection with 10 μm resolution detecting coating defects, plasma treatment achieving 38 mN/m surface energy |
| Moisture vapor transmission rate exceeding 0.5 g/m²/day at 25°C/75% RH | 8 | Lyophilized product reconstitution failure with &gt;5% moisture content | Multi-layer construction with 0.05 mm fluoropolymer barrier, helium leak testing at 1×10⁻⁶ mbar·L/s sensitivity |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| diameter | Config-dependent | mm | Verified |
| thickness | Config-dependent | mm | Verified |
| shore_hardness | Config-dependent | Shore A | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Sealing Flange](https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/product/sealing-flange.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Compression Molding Press**, **Autoclave Sterilizer**, **Inspection and Sorting Machine**  
**Downstream Applications**: Vaccine Vials, Injectable Medication Vials, Lyophilized Drug Vials  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What are the main materials used in pharmaceutical vial rubber stoppers?
**A**: Our pharmaceutical vial rubber stoppers are primarily made from bromobutyl rubber or chlorobutyl rubber, often with a silicone coating to enhance performance and ensure a sterile seal.

### Q: How does the silicone coating benefit pharmaceutical vial stoppers?
**A**: The silicone coating reduces friction during needle penetration, minimizes particulate generation, and improves the stopper's ability to maintain a sterile barrier, ensuring product integrity and safety.

### Q: What specifications should I consider when selecting vial rubber stoppers?
**A**: Key specifications include coating type, color, diameter (in mm), flange thickness (in mm), and Shore hardness (Shore A). These factors ensure compatibility with your vials and meet regulatory requirements for pharmaceutical preparations.

## 6. Manufacturing Compliance
- ISO 8871-1:2003 ELASTOMERIC PARTS FOR PARENTERALS AND FOR DEVICES FOR PHARMACEUTICAL USE

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Pharmaceutical Vial Rubber Stopper](https://cnfx.com/industry/pharmaceutical-preparation-manufacturing/product/pharmaceutical-vial-rubber-stopper)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: PHARMACEUTICAL_VIAL_RUBBER_STOPPER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: b231eaf3
