Food Grade LSR Silicone Spout Valve for Baby Sippy Cup

The Food Grade LSR Silicone Spout Valve for Baby Sippy Cup is a soft, transparent silicone drinking component designed for baby cups, sippy cups, training cups, feeding bottles, and toddler drinking products.

Made from food-grade liquid silicone rubber, this component integrates a drinking spout, sealing flange, and anti-leak valve structure into one molded part. The soft silicone spout provides a comfortable drinking experience for babies and toddlers, while the flexible sealing base helps reduce leakage when assembled with the cup lid.

This product can be customized according to customer drawings, samples, cup lid structure, flow requirement, silicone hardness, transparency, and sealing design.

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Key Features

Food-Grade LSR Silicone Material

Made from soft and transparent liquid silicone rubber, suitable for baby drinking products and food-contact applications.

Integrated Drinking Spout Design

The central spout is designed for smooth liquid flow and comfortable mouth contact. The shape, height, opening size, and flow rate can be customized.

Anti-Leak Sealing Structure

The wide silicone flange and bottom valve structure help improve sealing performance and reduce leakage when the cup is tilted or carried.

Soft and Flexible Touch

The silicone material is soft, elastic, and gentle for baby use, making it suitable for sippy cups, feeding bottles, and toddler training cups.

Precision Molded Structure

The product can be molded with accurate openings, sealing lips, positioning ribs, and assembly features to match different cup lid designs.

Custom OEM / ODM Design

We support customized development based on customer product structure, including spout shape, valve design, flange size, hardness, color, and packaging.

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Product Specifications

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Typical Applications

This LSR silicone spout valve can be used in:

Baby sippy cups
Toddler training cups
Feeding bottles
Straw cups
Anti-leak baby cup lids
Children’s drinking bottles
Soft silicone drinking spouts
Food-grade silicone valve components
Custom baby care silicone parts

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Product Advantages

Compared with hard plastic drinking parts, silicone spout valves provide a softer and safer mouth-contact experience. The flexible material helps protect the baby’s mouth while supporting stable liquid flow.

The integrated sealing flange helps the component fit tightly into the cup lid, reducing assembly complexity and improving anti-leak performance. The transparent design also gives the product a clean, hygienic, and high-quality appearance.

For baby care brands, this type of LSR component is suitable for customized cup lid development, replacement parts, and private-label baby drinking products.

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Customization Options

We support custom production according to customer requirements.

Available customization includes:

Spout shape
Spout height
Opening size
Liquid flow rate
Flange diameter
Sealing lip design
Bottom valve structure
Silicone hardness
Transparency level
Color matching
Logo-free design
Packaging method
OEM / ODM production

For accurate development, customers can provide the cup lid drawing, 3D file, physical sample, assembly structure, target age group, and leakage test requirement.

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Manufacturing Process

This product is produced by precision LSR injection molding. Liquid silicone rubber is injected into a dedicated mold and cured into a transparent, soft, and elastic drinking valve component.

The mold can be designed with fine details such as sealing lips, flow channels, anti-leak valve cuts, positioning ribs, and assembly structures. This allows the silicone spout valve to meet both functional and appearance requirements.

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Quality Control

For baby drinking products, safety, sealing, appearance, and dimensional accuracy are important quality points.

Typical inspection items include:

Appearance inspection
Dimension measurement
Hardness testing
Transparency check
Flash and burr inspection
Assembly fit test
Leakage test
Flow performance check
Silicone surface inspection
Packaging inspection

Quality standards can be customized according to the customer’s project requirements.

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FAQ

1. Can this silicone spout valve be customized for our cup lid?

Yes. We can customize the size, shape, sealing flange, spout design, and bottom valve structure according to your cup lid drawing, 3D file, or physical sample.

2. What material is used for this product?

The product is made from food-grade liquid silicone rubber. The final material grade can be selected according to customer requirements and target market standards.

3. Can the flow rate and anti-leak performance be adjusted?

Yes. The spout opening, valve structure, silicone hardness, and sealing lip design can be adjusted to balance drinking comfort, flow rate, and leakage resistance.