Custom Brass Core Inserts | Threaded Tooling Parts for Shower Gel Closures

Product Overview

Senlan Precision manufactures brass mold core insert parts with controlled hardness, specifically designed for shower gel plastic bottle cap injection molds. These components are produced strictly under Built-to-Print (OEM) requirements, focusing on dimensional accuracy, stable thermal behavior, and reliable performance in high-cavity packaging molds.

Key Features & Technical Advantages

• Brass material optimized for mold core insert applications

• Controlled hardness for balanced wear resistance and machinability

• Good thermal conductivity supporting stable molding cycles

• Precision CNC machining for consistent cavity geometry

• Suitable for frequent mold opening and long production runs

• Full customization based on customer drawings and specifications

Application Scenarios / Industry Applications

• Shower gel plastic bottle cap injection molds

• Personal care and liquid packaging cap molds

• Multi-cavity packaging molds requiring stable core performance

• Mold spare parts and replacement core inserts

• Injection molds with emphasis on cycle stability and part consistency

Mold Structure & Design Description

Brass mold core inserts are typically applied in thread forming and functional core areas of bottle cap molds. The material’s thermal conductivity and stable hardness help maintain consistent melt flow and reduce localized overheating, contributing to uniform cap geometry and surface quality during long production cycles.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision ensures repeatable accuracy through a controlled machining workflow:

• MAKINO high-precision CNC machining centers (Japan)

• HARDINGE CNC lathes (USA)

• Precision turning, milling, internal grinding, and polishing

• Tight dimensional control suitable for multi-cavity mold assemblies

• Machining accuracy tailored to drawing requirements

Custom Development / OEM Cooperation Process

1. Review of customer drawings and technical specifications

2. Brass grade and hardness confirmation

3. CNC machining and precision finishing

4. In-process dimensional inspection

5. Final quality verification

6. Export-standard packaging and delivery

All parts are produced strictly according to OEM / Built-to-Print standards.

Quality Control & Export Experience

• Incoming material inspection and traceability

• Dimensional inspection at critical machining stages

• Final inspection prior to shipment

• Stable export experience serving international packaging mold manufacturers

Related Products Recommendation

• Brass and copper alloy mold core inserts

• Threaded core inserts for plastic bottle caps

• Multi-cavity mold spare parts

• Custom injection mold components for packaging applications

FAQ – Technical & Procurement

Q1: Why use brass for bottle cap mold core inserts?
Brass provides good thermal conductivity and stable machining behavior, supporting consistent molding performance.

Q2: Are hardness values customizable?
Yes. Hardness can be controlled according to drawing and application requirements.

Q3: Can these inserts be used in multi-cavity molds?
Yes. They are suitable for high-cavity bottle cap molds with stable dimensional control.

Q4: Do you manufacture only based on drawings?
Yes. All parts are produced strictly according to customer drawings (Built-to-Print).

Q5: Can inspection reports be provided?
Inspection data can be supplied upon request.

Get a Quote

For hardness brass mold core insert parts for shower gel plastic bottle cap injection molds, please share your drawings or technical requirements. Senlan Precision will provide an engineering-focused OEM manufacturing solution tailored to your mold design.