LSR Overmolded Electronic Housing Waterproof Silicone Gasket

SiliconePlus manufactures custom LSR overmolded electronic housing waterproof silicone gaskets for 3C electronics, rugged handheld devices, smart hardware, industrial terminals and compact waterproof enclosures.

This product is not a standard loose silicone ring. It is an integrated silicone over plastic sealing structure. Liquid silicone rubber is molded onto the plastic housing groove to create a stable sealing lip, compression edge and waterproof barrier.

Designed for Waterproof Electronic Enclosures

For electronic housings, waterproof reliability depends on more than adding a soft gasket. The sealing groove, silicone height, compression ratio, plastic housing tolerance, bonding edge and mold precision all affect the final sealing result.

An LSR overmolded gasket can help reduce manual assembly steps and improve sealing consistency because the silicone sealing path is formed directly on the plastic housing. This makes it suitable for waterproof 3C products, industrial control devices, portable terminals and outdoor electronics.

Integrated Overmolding Structure

The product can be designed with a continuous silicone sealing lip around the housing edge. During assembly, the red silicone gasket is compressed between the upper and lower housing parts, helping block water, dust and moisture from entering the internal electronic area.

Typical structure options include:

• Silicone sealing lip
• Plastic housing groove
• Overmolding bond edge
• Compression sealing path
• Corner sealing reinforcement
• Thin-wall housing structure
• Screw boss and hole clearance design
• Custom sealing height and width
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Key Advantages

• Integrated silicone over plastic structure
• Better sealing position consistency
• Reduced manual gasket assembly
• Waterproof and dustproof enclosure support
• Strong bonding between silicone and plastic housing
• Stable compression sealing performance
• Custom shape for complex housing edges
• Suitable for compact 3C electronic products
• OEM/ODM production based on drawings or samples

Application Areas

This LSR overmolded waterproof silicone gasket can be used for:

• 3C electronic housings
• Rugged handheld terminals
• Portable electronic devices
• Smart hardware enclosures
• Industrial control housings
• Outdoor electronic equipment
• Waterproof sensor housings
• Communication device enclosures
• Power bank housings
• Compact electronic modules

Custom Manufacturing Options

SiliconePlus can customize the gasket structure according to your plastic housing design, waterproof target, assembly method and production requirements.

Available customization options include:

• Custom silicone gasket path
• Custom sealing lip height
• Custom compression ratio
• Custom silicone hardness
• Custom color matching
• Silicone over ABS, PC, PA, PBT or other engineering plastics
• Insert molding and overmolding support
• Mold flow and DFM evaluation
• Prototype sampling and mass production
• Dimensional inspection and waterproof test support

Material and Process Considerations

For silicone over plastic projects, material matching is important. The plastic substrate must withstand the molding process, and the silicone formula should be selected according to bonding requirements, sealing performance, product use environment and long-term durability.

Before mold opening, we recommend confirming:

• Plastic substrate material
• Housing tolerance
• Sealing groove design
• Silicone hardness
• Bonding method
• Assembly compression
• Waterproof test standard
• Production quantity
• Appearance requirements
• Inspection method

Why Choose SiliconePlus?

SiliconePlus focuses on custom silicone overmolding, liquid silicone rubber injection molding and precision silicone parts manufacturing. We support customers from design review and DFM analysis to tooling, sampling, mass production and quality inspection.

For electronic housing waterproof gasket projects, our team can help evaluate whether the sealing lip, groove depth, bonding area, wall thickness and compression structure are suitable for stable production.

Send Your Project Requirements

If you need a custom LSR overmolded electronic housing gasket, silicone over plastic enclosure seal or waterproof silicone gasket for 3C electronics, please send us your 2D drawings, 3D files, samples, product photos and waterproof requirements.

Our engineering team will review your project and provide a custom silicone overmolding solution.