5*2*7MM Silicone & FKM Duckbill Valve | One-Way Check Valve for Packaging, Medical & Appliance Applications
Our Silicone & FKM Duckbill Valve is a high-performance one-way check valve designed to provide reliable fluid and air control in a wide range of applications. Made from premium silicone rubber or fluoroelastomer (FKM), this valve ensures excellent flexibility, chemical resistance, and long-term durability.
The duckbill design allows fluid or gas to flow in one direction while preventing backflow, making it ideal for container packaging, medical devices, and household appliances.
This valve is especially suitable for applications requiring leak prevention, pressure regulation, and contamination control.
The duckbill structure automatically opens under pressure and closes when pressure is released, preventing backflow effectively.
Provides tight sealing even under low pressure, ensuring no leakage or contamination.
Made from high-quality elastomers with excellent elasticity and long service life.
- Silicone: Suitable for general use, flexible and temperature resistant
- FKM (Viton): Superior resistance to oils, chemicals, and harsh environments
Suitable for medical, food-grade, and sensitive applications (custom grades available).
Available in:
- Various sizes and opening pressures
- Different shapes and thicknesses
- Custom colors and hardness (Shore A)
Our duckbill valves are widely used in:
- Container packaging (liquid dispensing caps, vented closures)
- Household appliances (coffee machines, water dispensers, cleaning equipment)
- Medical devices (fluid control systems, diagnostic equipment)
- Personal care packaging (cosmetic bottles, shampoo caps)
- Industrial fluid control systems
| Property | Unit | Specification |
|---|---|---|
| Material | / | Silicone / FKM (Fluoroelastomer) |
| Structure | / | Duckbill one-way valve |
| Hardness | Shore A | 30 – 70 (customizable) |
| Temperature Range | °C | Silicone: -40°C to 200°C / FKM: -20°C to 250°C |
| Opening Pressure | kPa | Customizable |
| Color | / | Transparent / White / Black / Custom |
| Size | mm | Custom sizes available |
| Chemical Resistance | / | Excellent (especially FKM) |
| Certification | / | RoHS / FDA (optional) |
- Accurate one-way flow control performance
- Long-lasting elasticity and durability
- Suitable for harsh chemical environments (FKM option)
- Low opening pressure for sensitive applications
- Compact design for easy integration into products
We focus on producing silicone and FKM components, including precision valves and sealing parts.
With dedicated facilities for rubber and sealing materials, we ensure stable production capacity and competitive pricing.
Serving global clients in packaging, medical, and appliance industries.
We support:
- Custom molds and designs
- Material selection based on application
- Performance optimization (pressure, elasticity)
Each valve is tested for sealing performance and durability before delivery.
It is a one-way valve used to allow fluid or air to flow in one direction while preventing backflow.
Silicone offers excellent flexibility and temperature resistance, while FKM provides superior chemical and oil resistance.
Yes, we provide full customization based on your application requirements.
Yes, medical-grade materials can be provided upon request.
Yes, free samples are available for testing and evaluation.
duckbill valve
silicone duckbill valve
FKM duckbill valve
one way check valve rubber
rubber check valve
medical duckbill valve
packaging vent valve
liquid dispensing valve
Looking for a reliable duckbill valve manufacturer for your application?
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.