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The ST402 Straight Core Inner Tube serves as a foundational component for manufacturers seeking reliable internal structural support and enhanced grip solutions. Crafted from premium Thermoplastic Rubber (TPR), this core delivers a distinct tactile experience—offering a firm yet yielding surface that feels secure in the hand while maintaining its structural integrity under stress. The material features a matte black finish that naturally resists scuffing and avoids the harsh chemical odors often associated with industrial plastics. By integrating this core into your product lines, you ensure a consistent, dependable foundation that elevates the overall feel and longevity of the final assembled item. The TPR composition not only provides exceptional weather resistance but also complies with stringent environmental and safety testing standards, ensuring your end products meet global market requirements.
| Model | ST402 |
| Material | TPR |
| Product Specifications | 116×∅22.5mm |
| Modifiers | black, practical, sturdy, non slip, wear-resistant, portable, high-quality, simple, versatile |
Designed primarily for internal structural support and hand grip reinforcement, this component is essential for heavy-duty items such as luggage, outdoor equipment, and professional toolkits. When integrated into a handle assembly, it immediately enhances structural stability, preventing the flexible outer materials from collapsing under heavy loads. This ensures the reliability of the component connection, reducing the risk of premature failure at stress points. Furthermore, when utilized directly as a grip component, it transforms the user experience. The TPR material provides a secure, non-slip surface that performs exceptionally well even in damp or demanding environments. Users will notice a significant improvement in comfort and stability, as the core distributes weight evenly across the palm, minimizing hand fatigue during prolonged carrying or lifting tasks.
The ST402 operates with a dual-purpose functionality that adds measurable value to your manufactured goods. Primarily, it delivers a critical internal structural support function. By acting as a resilient backbone within fabric or leather enclosures, it actively enhances the structural stability of equipment and luggage, maintaining the intended shape and preventing material sagging. Secondly, as a dedicated gripping component, it is engineered to withstand substantial tension and pressure. The core absorbs the kinetic energy generated during lifting, translating it into a stable, comfortable hold for the end user. This functional design ensures the absolute reliability of the component connection, anchoring the handle securely to the main body of the bag or tool case. It resists the twisting and pulling forces that typically cause inferior handles to detach or degrade over time.
Simple and Versatile Appearance: The minimalist design ensures it is highly suitable for various styles of items, blending effortlessly into both tactical outdoor gear and premium travel luggage without clashing with existing aesthetics.
Strong Adaptability: It meets the complex structural or gripping needs of various scenarios, providing a universal foundation for multiple product lines and reducing the need to source different cores for different items.
Exceptional Durability: The TPR material is inherently wear-resistant and durable. It demonstrates excellent resistance to deformation and daily wear, guaranteeing a long service life even under constant mechanical stress.
Highly Practical Installation: The structural design is straightforward and easy to install. It can quickly integrate with surrounding components, accelerating your assembly line processes and reducing labor time.
Tailored Customization (OEM/ODM): We support bespoke modifications, allowing clients to customize exclusive colors, dimensions, and brand logos to meet the personalized product design standards of different industries.
This core is widely used in various industries that require dependable internal support or ergonomic grip cores.
Within the travel and transit sector, this component serves as the essential internal structural support and grip core of luggage. It provides the necessary rigidity for suitcase handles, ensuring they remain comfortable and intact through years of airport handling and transit.
For manufacturers of hiking backpacks, tents, and survival gear, the ST402 provides critical structural connection and support. Its weather-resistant TPR construction ensures it will not crack or degrade when exposed to extreme temperature fluctuations or UV radiation.
Industrial tool bags and heavy-duty equipment cases rely on this core for internal support and as a primary grip core. It handles the concentrated weight of metal tools, preventing the handle fabric from tearing while offering a secure hold for industrial workers.
The physical architecture of the ST402 is engineered for maximum efficiency and compatibility. The main body features a straight tube-shaped inner core structure, meticulously designed to be matched with webbing. This compact structure ensures it occupies minimal space while delivering maximum reinforcement. Through the precise combination of the inner core and webbing, the product successfully achieves either internal structure support or a highly comfortable grip function. The standardized 116×∅22.5mm dimensions are specifically calculated to perfectly accommodate standard webbing sizes. This precise compatibility significantly enhances assembly efficiency for downstream manufacturing facilities. By securely locking the webbing in place around the core, it guarantees the stability of the component connection and the overall structure, preventing any internal shifting or twisting during end-user operation.
To support large-scale procurement demands, we have established a highly efficient production ecosystem focused on reliability and scale.
R&D and Production Capacity: Backed by powerful mold development capabilities and scaled injection molding production lines, we guarantee rapid response times and stable delivery schedules for substantial volume orders. Our facilities are equipped to handle sudden surges in demand without compromising on lead times.
Quality Control and Consistency: We employ strict, standardized production workflows. Every batch of inner tube cores undergoes rigorous testing to ensure absolute consistency in dimensional accuracy, wear resistance, and compressive strength. This minimizes defect rates on your assembly line and protects your brand reputation.
One-Stop Procurement Solution: Beyond the straight tube inner core, we offer a comprehensive suite of matching accessories. We can supply compatible webbing, buckles, and various plastic components for luggage and outdoor gear. This integrated approach simplifies your vendor management, streamlines logistics, and effectively reduces overall supply chain procurement costs.
