Custom CNC Machined Parts for Battery Leak Test Fixtures



Product Overview:
This precision leak test fixture is specifically engineered for EV battery pack EOL airtightness testing. Featuring a rigid aluminum alloy frame and custom-molded sealing interfaces, it connects seamlessly to a leak tester for real-time pressure decay monitoring, enabling accurate verification that the battery pack housing complies with stringent IP protection requirements. Designed for high-speed production lines, it offers rapid clamping and reliable sealing, helping to streamline the testing process and provide consistent, actionable data for quality control.
Workmanship: CNC Milling, CNC Drilling, Sheet Metal Fabrication, Metal Polishing, 3 Axis CNC Machining
Material: Aluminum
Inquiry Email: sales@flexiturn.com
Custom CNC Machined Parts for Battery Leak Test Fixtures Details
Key Features
Precision Engineering
Specifically developed for EV battery pack & module EOL airtightness testing, delivering consistent, repeatable test results with high measurement accuracy.
Robust Construction
Built with a rigid CNC-machined aluminum alloy frame for long-term structural stability and reliable sealing performance under repeated testing cycles.
Custom Sealing Interface
Features custom-molded silicone seals designed to securely close all ports and housing gaps, ensuring a leak-free test environment with no false leaks and full test integrity.
Production-Grade Reliability
Optimized for high-volume manufacturing environments, provides stable clamping force and repeatable performance to support consistent quality control workflows.
Actionable Data Output
Interfaces directly with standard leak testing systems for real-time pressure decay monitoring, providing reliable, traceable data for QC decision-making and process improvement.
Technical Specifications
| Parameter | Details |
| Application | EV Battery Pack & Module EOL Leak Testing |
| Test Method | Pressure Decay Monitoring |
| Frame Material | High-Grade CNC-Machined Aluminum Alloy |
| Sealing Material | Custom-Molded Silicone Seals |
| Compliance | IP Protection Standards Verification |
| Operation | Pneumatic / Manual Rapid Clamping |
Why Choose This Fixture?
Reliable Port Sealing: Custom-molded seals match the specific port geometries of each battery pack, eliminating false leaks and ensuring stable, accurate test results.
Production-Proven Durability: Solid CNC aluminum alloy construction delivers long service life with minimal upkeep, reducing total cost of ownership in continuous production.
Consistent Traceable Data: Precision pressure decay monitoring provides objective, repeatable test results, supporting effective quality control and process optimization.
Accurate IP Compliance Verification: Reliably validates that battery enclosures meet IP67, IP68 or specified ingress protection ratings before shipment.
Customizable Configuration: Sealing interfaces, clamping fixtures, and positioning structures can be tailored to specific battery module / pack models and test requirements.
Application Scenarios
- EV battery pack assembly lines – EOL leak testing station
- Battery module and pack incoming quality inspection
- Battery housing component validation during R&D
- Aftermarket battery pack reconditioning and testing
Ordering Information
Customized sealing interfaces and clamping configurations are available based on specific battery pack models. Please contact us with your battery pack drawings or port layout for a tailored solution.
Q1. What types of machining services do you offer?
We provide comprehensive CNC turning and milling services. FlexiTurn machines are equipped with 8-station programmable turrets and support both turning and 5-axis milling operations, making them suitable for everything from simple cylindrical parts to complex multi-axis components.
Q2. What materials can you work with?
We machine a wide range of materials including carbon steel, stainless steel, aluminum, plastics, and other engineering-grade materials. If you have a specific material in mind, just send us your requirements and we'll confirm feasibility.
Q3. What is your typical lead time?
Lead times vary depending on part complexity, quantity, and material availability. For prototypes and small-batch runs, we typically deliver within 5–10 business days. For high-volume production, we'll provide a customized schedule after reviewing your drawings. Contact us with your project details for an accurate timeline.
Q4. How do you price your services?
Pricing is based on several factors: material cost, machining time, tooling requirements, setup complexity, and order quantity. We offer competitive rates for both low-volume prototypes and high-volume production runs. Request a quote with your CAD files or drawings and we'll get back to you within 24 hours.
Q5. What quality control measures do you have in place?
We follow strict quality control procedures throughout the machining process. Our CNC systems support programmable precision down to 1 μm, ensuring high accuracy and repeatability. Every batch undergoes dimensional inspection before shipping, and we can provide inspection reports upon request.





