Customized Food Grade Self-sealing Cross Bottle Cap Silicone Valves with One Way Cut Cross Slit Manufacturing

Overview

Our Customized Food Grade Self-Sealing Cross Bottle Cap Silicone Valves with One-Way Cut Cross Slit are designed to provide superior performance and hygiene in liquid dispensing applications. Made from 100% FDA- and LFGB-compliant food-grade silicone, these valves feature a self-sealing design with a unique one-way cut cross slit pattern, ensuring effective liquid flow control and prevention of leakage or backflow. Ideal for bottle caps, sports drink containers, and hydration systems, these valves maintain freshness and consistency while allowing easy flow of beverages, syrups, or other liquids.
Crafted through liquid silicone rubber (LSR) injection molding, these valves offer high durability, flexibility, and exceptional sealing capabilities. The cross-slit design enhances air flow efficiency, making them perfect for high-performance liquid packaging in food and beverage applications.

Basic Information

Key Benefits

• Food-Grade Compliance: Made from 100% FDA- and LFGB-certified silicone, ensuring a safe, odorless, and BPA-free product for food and beverage packaging.
• Self-Sealing & One-Way Flow: The innovative cross-slit design automatically seals the valve when not in use, preventing leaks while allowing smooth, controlled liquid flow when pressure is applied.
• Precision Engineering: Manufactured using LSR injection molding with CNC steel tooling, ensuring ±0.02 mm precision and high consistency for every batch.
• Customizable Options: Flexibility in slit geometry, size, color, and hardness to accommodate various product needs, from sports drinks to syrups and condiments.
• High Durability & Performance: Designed to withstand temperature extremes (-40°C to 230°C), UV exposure, and repeated compression cycles, ensuring reliable, long-lasting use.
• Factory-Direct Service: Offering competitive pricing, fast turnaround, and global shipping support with a comprehensive, one-stop OEM production system.

Quality Assurance

Our comprehensive quality control system ensures each self-sealing silicone valve meets the highest standards of performance and safety. The process includes:

• Material Verification: All raw materials are thoroughly tested for FDA, LFGB, and RoHS compliance.
• Dimensional Precision: 3D optical measurements and slit geometry inspections to ensure accurate fit and performance.
• Functional Testing: Validation of flow rate, leak-proof integrity, and long-term actuation durability under variable pressure conditions.
• Thermal & Chemical Resistance Testing: Validated across -40°C to +230°C temperature ranges, ensuring reliable performance in demanding environments.

All tests are performed in our ISO 9001 and IATF 16949-certified cleanroom facilities, ensuring full traceability and product consistency.

Factory Capabilities

Our advanced production facility is equipped with state-of-the-art technologies, including CNC machining, Mirror EDM, and precision wire cutting to manufacture high-precision micro-slit molds for silicone valve tooling. We use automated LSR injection molding machines, compression presses, and cleanroom assembly lines to achieve consistent and efficient mass production of self-sealing one-way valves.
Our in-house quality assurance team performs rigorous testing using 3D projectors, leakage testers, durometers, and elasticity analyzers to guarantee the quality and performance of each valve. With ISO and IATF certifications, we offer rapid prototyping, scalable manufacturing, and custom-engineered silicone valve solutions for the global beverage and packaging industries.