Structured Manufacturing Data (2026)

Cap/Lid Assembly

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Cap/Lid Assembly used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Cap/Lid Assembly is characterized by the integration of Main Lid Plate and Sealing Gasket. In industrial production environments, manufacturers listed on CNFX commonly emphasize Aluminum alloy construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A sealing and protective assembly that covers the cell housing opening

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Product Specifications

Technical details and manufacturing context for Cap/Lid Assembly

Definition
The Cap/Lid Assembly is a critical component of the Cell Housing Assembly that provides hermetic sealing, environmental protection, and structural integrity for the enclosed cell components. It typically includes the main lid, sealing gaskets, fastening mechanisms, and electrical feedthroughs where applicable.
Working Principle
The assembly creates a sealed enclosure by applying compression force through fasteners onto sealing materials, preventing ingress of contaminants while maintaining structural stability and electrical isolation as required.
Common Materials
Aluminum alloy, Stainless steel, Silicone rubber
Technical Parameters
  • Overall dimensions including diameter, thickness, and sealing surface specifications (mm) Per Request
Components / BOM
  • Main Lid Plate Part
    Primary structural component providing mechanical strength and sealing surface
    Material: Aluminum alloy
  • Sealing Gasket Part
    Creates hermetic seal between lid and housing body
    Material: Silicone rubber
  • Fastening Bolts Part
    Apply compression force to achieve proper sealing
    Material: Stainless steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Cap/Lid Assembly.

aluminum alloy computer housing lid stainless steel sealing cap assembly optical product protective lid plate electronic device housing cover gasket computer component fastening bolt cap

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Cell Housing Assembly
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 50 psi
flow rate: N/A (static sealing application)
temperature: -40°C to 150°C
slurry concentration: 0-30% solids by weight
Media Compatibility
✓ Aqueous electrolytes ✓ Lithium-ion battery cells ✓ Industrial chemical storage tanks
Unsuitable: High-pressure steam systems (>100 psi)
Sizing Data Required
  • Cell housing opening diameter (mm)
  • Required sealing force (N)
  • Environmental exposure class (IP rating)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Seal degradation
Cause: Chemical attack from process fluids or cleaning agents compromising elastomeric seals, leading to leaks and loss of containment.
Thread galling or cross-threading
Cause: Misalignment during assembly, excessive torque application, or wear from repeated cycling causing mechanical damage to mating threads.
Maintenance Indicators
  • Visible leakage or weeping around the seal interface during operation.
  • Abnormal resistance or grinding noise during manual tightening/loosening indicating thread damage.
Engineering Tips
  • Implement torque-controlled installation procedures using calibrated tools to prevent over-tightening and ensure consistent seal compression.
  • Establish a regular inspection schedule for seal condition and thread integrity, with replacement based on wear indicators or time-in-service limits.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems ASTM D4169 Standard Practice for Performance Testing of Shipping Containers and Systems CE Marking (EU Regulation 1935/2004 for Food Contact Materials)
Manufacturing Precision
  • Thread Engagement: +/-0.1mm
  • Sealing Surface Flatness: 0.05mm
Quality Inspection
  • Leak Test (Pressure/Vacuum Method)
  • Dimensional Verification with CMM

Factories Producing Cap/Lid Assembly

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 materials are used in this cap/lid assembly?

This assembly uses premium aluminum alloy for the main lid plate, stainless steel for fastening bolts, and silicone rubber for the sealing gasket to ensure durability and reliable protection.

How does this assembly protect computer and optical products?

The cap/lid assembly creates a secure seal over cell housing openings, preventing dust, moisture, and contaminants from entering while providing structural protection for sensitive electronic and optical components.

What are the main components included in this assembly?

The assembly includes three key components: the main lid plate (aluminum alloy), sealing gasket (silicone rubber), and fastening bolts (stainless steel) for complete installation and sealing functionality.

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 Computer, Electronic and Optical 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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