Overview
Our LSR Injection Molding High-Quality Silicone Rubber Water Bottle Valves are engineered for spill-proof, mess-free dispensing of concentrated liquids in bottle caps and closures. Manufactured from 100% food-grade, platinum-cured liquid silicone rubber (LSR), each valve features a precision cross-slit cut geometry that provides reliable one-way flow, eliminates drips and backflow, and resists clogging from viscous concentrates like syrups, flavor drops, and supplements. Designed for OEM integration, these valves are fully customizable in size, hardness, slit profile, and transparency to match cap interfaces and brand requirements.
Basic Information
| Item | Specification |
|---|---|
| Place of Origin | Xiamen, China |
| Brand Name | OEM / Private Label |
| Material | Food-grade LSR (platinum cured) |
| Shape | Cross-slit (customizable) |
| Standard Sizes | 9.8 mm, 10.5 mm, 13.0 mm, 16.0 mm (custom sizes available) |
| Hardness | Shore A 20–70 (customizable) |
| Temperature Range | -40 °F to 450 °F (-40 °C to 232 °C) |
| Tolerance | ±0.02 mm (typical for critical dimensions) |
| Certifications | ISO 9001, FDA, LFGB, RoHS |
| MOQ | Small orders accepted |
| Sample Lead Time | 5–7 business days |
| Production Lead Time | 20–25 business days |
| Packaging | Protective bulk or retail packaging — tailored per order |
| Primary Use | Spill-proof dispensing for concentrates, sauces, flavor enhancers |
Key Benefits
- True Leak-Proof Performance — Precision cross-slit geometry forms a self-sealing one-way valve that prevents drips and backflow after dispensing.
- Optimized for Viscous Fluids — Slit profile and material elasticity are tuned for smooth flow of syrups, honey-like concentrates, and dense liquid supplements.
- Durable Food-Grade Materials — Platinum-cured LSR is BPA-free, odorless, chemically resistant, and compatible with hot-fill and sterilization processes.
- OEM-Ready Customization — Rapid prototyping and size/hardness/logo customization enable seamless integration into existing cap designs and branded packaging.
Quality Assurance
We apply a rigorous QA program to guarantee consistent, safe valve performance:
- Material Verification: Incoming LSR batches are tested for FDA/LFGB compliance and traceability.
- Dimensional Control: Critical dimensions and slit geometry verified with 3D optical projectors and CMM (±0.02 mm).
- Functional Testing: Leak tests, opening pressure profiling, flow-rate calibration with typical concentrates, and long-cycle fatigue tests.
- Physical Testing: Shore A hardness checks, tensile/tear resistance sampling, and high/low temperature endurance.
- Batch Traceability: Full lot coding, inspection records, and cleanroom final assembly available per OEM requirements.
All production runs are performed in ISO 9001 certified facilities with clean-assembly lines to ensure hygiene and consistency.
Type of Silicone Valves
- Cross-Slit Valves — Precision X-cut for controlled one-way flow and drip prevention (recommended for concentrates).
- Duckbill Valves — Wide-opening, low backpressure design for thicker fluids.
- Umbrella Valves — High sealing force for pressurized or carbonated liquids.
- Snowflake / Multi-Slit Valves — Enhanced flow uniformity and aesthetic options for premium caps.
Factory Capabilities
Our facility integrates advanced tooling and automated molding for high-precision LSR valves: CNC machining, Mirror EDM and precision wire cutting for micro-slit tooling; automated LSR injection systems and compression presses for stable production; and in-line inspection with 3D projectors, leakage testers, durometers and elasticity gauges. We offer rapid prototyping, small-batch validation and scalable mass production with ISO 9001 and IATF-level quality controls to support global OEM customers.
