---
title: "Lid Assembly"
industry: "Rubber and Plastic Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:LID_ASSEMBLY"
  data_integrity_hash: "d22714e7e1e658d0bdb8cc127c7b193e"
  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:LID_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/product/lid-assembly.md"
  official_resource_url: "https://cnfx.com/industry/rubber-and-plastic-product-manufacturing/product/lid-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-0.8 MPa clamping pressure, -40°C to 80°C temperature range"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 26
    unit: "MPa"
    consequence: "Stress relaxation in HDPE polymer chains under sustained load, causing permanent set and loss of sealing force"
fmea_matrix_quantitative:
  - node_1:
      trigger: "UV radiation exposure exceeding 1000 W/m² for 2000 hours"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Carbon black additive at 2.5% concentration for UV stabilization"
  - node_2:
      trigger: "Cyclic thermal loading with ΔT &gt; 50°C at 0.1 Hz frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Glass fiber reinforcement at 15% volume fraction to match CTE of mating surface"
bom_nodes:
  lid-body:
    type: "component"
    urn: "URN:CNFX:ME:LID_BODY"
    interface_type: "physical-logic-coupled"
  sealing-gasket:
    type: "component"
    urn: "URN:CNFX:ME:SEALING_GASKET"
    interface_type: "physical-logic-coupled"
  latching-mechanism:
    type: "component"
    urn: "URN:CNFX:ME:LATCHING_MECHANISM"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/product/lid-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "c79bce8555adb3444480ec05ad9c4de411de7e55f83681de30a89ea61921860b"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Lid Assembly

## 1. Technical Definition
The complete closure mechanism for a High-Density Polyethylene (HDPE) storage container, designed to seal the container opening securely.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-0.8 MPa clamping pressure, -40°C to 80°C temperature range**. Failure boundary: **HDPE material yield strength threshold at 26 MPa tensile stress, 0.5 mm permanent deformation of sealing surface**, Mechanism: **Stress relaxation in HDPE polymer chains under sustained load, causing permanent set and loss of sealing force**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| UV radiation exposure exceeding 1000 W/m² for 2000 hours | 8 | Polymer chain scission reducing HDPE tensile strength by 40% | Carbon black additive at 2.5% concentration for UV stabilization |
| Cyclic thermal loading with ΔT &gt; 50°C at 0.1 Hz frequency | 8 | Differential thermal expansion creating 0.3 mm gap at seal interface | Glass fiber reinforcement at 15% volume fraction to match CTE of mating surface |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Injection Molding Machine**, **Industrial Chiller**, **Hopper Dryer**  
**Downstream Applications**: HDPE Storage Containers, Industrial Drums, Chemical Tanks  

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

### Q: What materials are used in this lid assembly?
**A**: This lid assembly is constructed from High-Density Polyethylene (HDPE) for the main body and latching mechanism, with a silicone or rubber gasket for optimal sealing performance.

### Q: How does this lid assembly ensure a secure seal?
**A**: The assembly features a precision-engineered latching mechanism that applies even pressure to the sealing gasket, creating an airtight and watertight seal on HDPE storage containers.

### Q: What are the main components of this lid assembly?
**A**: The lid assembly consists of three key components: the lid body (HDPE), the latching mechanism (HDPE), and the sealing gasket (silicone or rubber) for complete closure functionality.

## 6. Manufacturing Compliance
- ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Lid Assembly](https://cnfx.com/industry/rubber-and-plastic-product-manufacturing/product/lid-assembly)**

### 🌐 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**: LID_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 34d29825
