Customized High Precision LSR Injection Molding Silicone Rubber One Way Air Valves for Bottle Caps Suppliers

Overview

Our Customized High Precision LSR Injection Molding Silicone Rubber One-Way Air Valves for Bottle Caps are engineered to provide efficient, hygienic, and leak-proof air regulation in beverage bottle caps, squeeze bottles, and liquid packaging systems. Manufactured using liquid silicone rubber (LSR) injection molding, these valves ensure precise air exchange control while preventing backflow and liquid leakage.
Made from 100% FDA- and LFGB-compliant food-grade silicone, the valves deliver superior flexibility, durability, and long-term sealing performance under repeated compression. Each valve is designed with precision-engineered micro-slit or cross-slit geometry, offering stable airflow performance and maintaining internal pressure balance—ideal for hydration bottles, condiments, sports drink packaging, and baby care products.

Basic Information

Key Benefits

• Food-Grade Safety & Compliance: Manufactured from 100% FDA- and LFGB-certified silicone for BPA-free, odorless, and non-toxic performance.
• Efficient Air Regulation: Designed to release air smoothly while preventing backflow or leakage, maintaining optimal internal pressure.
• High Precision Manufacturing: Produced using CNC-machined LSR molds with ±0.02 mm dimensional tolerance for consistent flow performance.
• Customizable Configurations: Flexible customization for slit type, geometry, size, color, and hardness to meet diverse application needs.
• Extreme Durability: Resistant to temperatures from -40°C to 230°C, UV light, and mechanical fatigue from repetitive compression cycles.
• Cost-Effective OEM Service: Integrated tooling, molding, and packaging support with rapid turnaround and global delivery options.

Quality Assurance

Every silicone one-way air valve is subject to strict quality control under ISO and IATF-certified manufacturing standards. Each batch undergoes:

• Material Compliance Testing: Verified FDA, LFGB, and RoHS standards.
• Dimensional Inspection: 3D optical measurement and slit geometry verification with ±0.02 mm precision.
• Functional Testing: Leak-proof, airflow rate, and backflow resistance validation under controlled pressure conditions.
• Thermal & Mechanical Endurance: Performance validation between -40°C to +230°C with long-cycle compression testing.

All production and inspection processes are conducted in ISO Class 8 cleanroom environments, ensuring hygiene, traceability, and consistent performance for every order.

Factory Capabilities

Our production facility integrates CNC machining, Mirror EDM, and precision wire cutting to produce ultra-accurate LSR mold tooling for air valve applications. With automated LSR injection molding systems, compression molding presses, and cleanroom assembly lines, we deliver consistent and efficient large-scale production.
Comprehensive testing equipment—including 3D projectors, airflow testers, durometers, and elasticity analyzers—ensures precision and reliability in every component.
Backed by ISO 9001 and IATF 16949 certifications, we provide a one-stop solution from tooling design to mass production, serving the global beverage, packaging, and baby care industries with high-precision silicone air valve systems.