---
title: "Dispensing Syringe/Barrel"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:DISPENSING_SYRINGEBARREL"
  data_integrity_hash: "be4907ae6ba61d68d4ad7e3f310b82a9"
  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:DISPENSING_SYRINGEBARREL"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/dispensing-syringebarrel.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/dispensing-syringebarrel"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-15.0 MPa (1-150 bar) at 20-80°C"
    unit: "ml"
engineering_limits:
  max_safe_operating_point:
    value: 18.0
    unit: "MPa"
    consequence: "Plunger seal extrusion failure due to exceeding 18.0 MPa (180 bar) yield pressure of PTFE material (Young's modulus 0.5 GPa) or barrel fracture from hoop stress exceeding 25.0 MPa (250 bar) tensile strength of polypropylene (σ_hoop = P·D/2t)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Thermal paste particle agglomeration &gt;50 μm diameter"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 20 μm inline filter with 316L stainless steel mesh (pore density 100/cm²)"
  - node_2:
      trigger: "Cyclic pressure loading at 1 Hz frequency exceeding 10^5 cycles"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement 7075-T6 aluminum barrel with 290 MPa fatigue strength and 0.5 mm minimum wall thickness"
bom_nodes:
  barrel-body:
    type: "component"
    urn: "URN:CNFX:ME:BARREL_BODY"
    interface_type: "physical-logic-coupled"
  plunger:
    type: "component"
    urn: "URN:CNFX:ME:PLUNGER"
    interface_type: "physical-logic-coupled"
  plunger-seal:
    type: "component"
    urn: "URN:CNFX:ME:PLUNGER_SEAL"
    interface_type: "physical-logic-coupled"
  nozzle-thread:
    type: "component"
    urn: "URN:CNFX:ME:NOZZLE_THREAD"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 7886-1:2017 (STERILE HYPODERMIC SYRINGES FOR SINGLE USE)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/AAMI/ISO 80369-7:2016 (SMALL-BORE CONNECTORS FOR LIQUIDS AND GASES IN HEALTHCARE APPLICATIONS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN ISO 11040-4:2015 (PREFILLED SYRINGES - PART 4: GLASS BARRELS FOR INJECTABLES AND STERILIZED SUBASSEMBLED SYRINGES READY FOR FILLING)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/dispensing-syringebarrel.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "336bc18467e315ded371a25034e1b2aa0b4b49fdd9969165ae4bd3357b18f370"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Dispensing Syringe/Barrel

## 1. Technical Definition
The cylindrical container and delivery mechanism that holds and dispenses thermal paste in precise amounts.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-15.0 MPa (1-150 bar) at 20-80°C**. Failure boundary: **Plunger seal leakage at &gt;18.0 MPa (180 bar) or barrel wall fracture at &gt;25.0 MPa (250 bar)**, Mechanism: **Plunger seal extrusion failure due to exceeding 18.0 MPa (180 bar) yield pressure of PTFE material (Young's modulus 0.5 GPa) or barrel fracture from hoop stress exceeding 25.0 MPa (250 bar) tensile strength of polypropylene (σ_hoop = P·D/2t)**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Thermal paste particle agglomeration &gt;50 μm diameter | 8 | Plunger seal abrasion and leakage at 0.5 MPa (5 bar) | Install 20 μm inline filter with 316L stainless steel mesh (pore density 100/cm²) |
| Cyclic pressure loading at 1 Hz frequency exceeding 10^5 cycles | 8 | Barrel wall fatigue crack propagation from 0.1 mm to 2.0 mm critical length | Implement 7075-T6 aluminum barrel with 290 MPa fatigue strength and 0.5 mm minimum wall thickness |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | ml | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Thermal Paste Filling Machine**, **Syringe Barrel Assembly Machine**, **Precision Calibration System**  
**Downstream Applications**: Computer CPU Coolers, LED Lighting Heat Sinks, Automotive Electronic Control Units  

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

### Q: What materials are used in this dispensing syringe barrel?
**A**: This dispensing syringe barrel is constructed from Polypropylene (PP) for the barrel body, Polycarbonate (PC) for clarity and durability, and Stainless Steel for the plunger components, ensuring chemical resistance and longevity in industrial environments.

### Q: How does this syringe ensure precise thermal paste application?
**A**: The syringe features a precision-engineered plunger and seal system that allows controlled, consistent dispensing of thermal paste in exact amounts, minimizing waste and ensuring optimal thermal conductivity in machinery assembly.

### Q: What are the main components in the BOM for this product?
**A**: The Bill of Materials includes: Barrel Body (holds the thermal paste), Plunger (for dispensing control), Plunger Seal (prevents leakage), and Nozzle Thread (for attaching various applicator tips to suit different machinery needs).

## 6. Manufacturing Compliance
- ISO 7886-1:2017 (STERILE HYPODERMIC SYRINGES FOR SINGLE USE)
- ANSI/AAMI/ISO 80369-7:2016 (SMALL-BORE CONNECTORS FOR LIQUIDS AND GASES IN HEALTHCARE APPLICATIONS)
- DIN EN ISO 11040-4:2015 (PREFILLED SYRINGES - PART 4: GLASS BARRELS FOR INJECTABLES AND STERILIZED SUBASSEMBLED SYRINGES READY FOR FILLING)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Dispensing Syringe/Barrel](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/dispensing-syringebarrel)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: DISPENSING_SYRINGEBARREL | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 1dd8f77a
