Nov. 28, 2025
In everyday products like ketchup bottles, cosmetic tubes and travel containers, a tiny component plays an essential role—the silicone cross-slit valve. Designed for precise flow control, excellent sealing, and reliable leak prevention, this small valve has become a critical part of modern packaging across multiple industries.
A silicone cross-slit valve is made from food-grade liquid silicone rubber (LSR) using precision injection molding. Its most important feature is the cross-shaped slit on the valve surface.
Normally-Closed Design:
The cross-slit works like a sealing ring, and it stays tightly sealed under normal conditions, preventing leaks, blocking air ingress, and protecting the contents from contamination.
Opens Under Pressure:
When the container is squeezed, the slit opens instantly to dispense the product smoothly, then closes immediately when pressure is released.
Compared with standard silicone valves, cross-slit valves require stricter precision control and consistent performance. High-quality versions are made from materials that comply with FDA and LFGB standards for direct food and cosmetic contact, ensuring safety and reliability.
Silicone cross-slit valves are widely used in tomato ketchup, salad dressings, condiments, honey and syrup bottles.
They help:
● Keep contents fresh
● Prevent leakage
● Provide clean, precise dispensing
● Reduce waste and improve user experience
Shampoos, shower gels, lotions, creams, and skincare tubes benefit from:
● Accurate flow control
● Hygienic dispensing
● Prevention of oxidation or contamination
● Compatibility with active cosmetic ingredients
Used in sports water bottles, portable travel containers, and on-the-go packaging:
● Leak-proof during movement
● Opens only when squeezed or sucked
● Ideal for backpacks, gyms, and outdoor use
With excellent biocompatibility and sterilization resistance, cross-slit valves are suitable for:
● Medical packaging
● Health supplements
● Controlled-dose dispensing
High-quality silicone cross-slit valves are produced through LSR injection molding, ideal for large-scale production. Each line can produce up to 200,000 pcs/day, meeting high-demand supply requirements.
Key manufacturing steps include:
● Automatic Slitting & Punching: Ensures precision cross-slit alignment
● Tight Dimensional Tolerance Control
● AOI (Automatic Optical Inspection): Measures slit width, shape, and position
● 24/7 Leak Testing: Ensures no leakage throughout continuous pressure cycles
The final result is a valve with reliable sealing, consistent performance, and long-term durability.
YEJIA uses LSR materials from trusted suppliers like WACKER and Dow, and products are certified with:
● FDA
● LFGB
● NSF
Ensuring global compliance and safety for food and cosmetic applications.
● Wall thickness tolerance within ±0.03 mm
● Highly accurate slit dimensions
● Superior leak-proof and dispensing performance
YEJIA operates with:
● Full automatic inspection lines
● Complete testing reports
● Stringent process control from mold-making to final production
With rich experience in medical, automotive, and food packaging, YEJIA understands diverse application needs and offers tailored solutions.
● Standard MOQ: 50,000 pcs
● Large suppliers offer up to 10 million pcs/month capacity
Choose a supplier that matches your production scale.
A reliable supplier should offer:
● Various sizes (9.8mm, 10.5mm, 13mm, 16.5mm, 18mm, 21mm, etc.)
● Custom hardness, color and slit dimensions
● Tailored solutions for specific viscosity requirements
YEJIA provides:
● Mold design
● Mold fabrication
● LSR injection molding
● Plastic Injection Molding
● Full QC and assembly
Greatly simplifying project management and reducing overall costs.
Depending on the target industry, certifications may include:
● ISO 13485 (Medical)
● IATF 16949 (Automotive)
These certifications ensure product reliability and regulatory compliance.
A silicone cross-slit valve may be small, but behind it lies advanced material engineering, precision manufacturing, and strict quality control. When selecting a supplier, material safety, production accuracy, and industry expertise are far more important than price alone.
Choosing the right silicone valve partner ensures better product performance, stronger market competitiveness, and long-term business success.
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