Custom LSR Overmolded Charging Interface Seal for Wearable Devices
group nameMobile phone waterproof solution
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Min Order1 piece
brand nameSiliconePlus | Silicone OverMolding Manufacturing
payment methodT/T, L/C, MoneyGram, PayPal, Westem Union, Cash, Escrow
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update timeSat, 18 Jul 2026 04:17:01 GMT
Paramtents
Product Type LSR Overmolded Charging Interface Seal
Silicone Material Liquid Silicone Rubber / LSR
Substrate Plastic Carrier / Metal Contact / FPC
Molding Process LSR Insert Molding / Silicone Overmolding
Main Function Sealing / Insulation / Cushioning / Strain Relief
Interface Type Charging Contact / Charging Port / Custom Interface
Silicone Hardness Customized According to Application
Color Mechanical Lock / Primer-Assisted / Structure Evaluation
Waterproof Requirement Evaluated with Final Device Assembly
Custom Input 2D Drawing / 3D File / Physical Sample
Service OEM/ODM Custom Manufacturing
MOQ 500 pcs
Packging & Delivery
Min Order1 piece
Briefing
Custom LSR overmolded charging interface seals for smart wearables and compact electronics. OEM/ODM manufacturing, MOQ 500 pcs.
Detailed
SiliconePlus manufactures custom LSR overmolded charging interface seals for smart watches, smart rings, health trackers, wearable sensors and compact electronic devices.
The liquid silicone rubber is molded directly around a plastic carrier, metal charging contact, FPC or custom interface structure. The required conductive and mating areas remain exposed while the silicone forms an integrated sealing, insulation and cushioning zone.
This is not a standard removable silicone plug. Each component is developed according to the customer’s charging interface, device housing, assembly compression, electrical contact position and waterproof requirement.
Integrated Sealing Around the Charging Interface
Charging interfaces are common water-entry points in wearable and compact electronic devices. Sweat, moisture, dust and repeated charging may affect the contact area when the sealing structure is unstable.
LSR overmolding can form the sealing lip, contact isolation area, housing interface and flexible transition zone as one integrated component.
The silicone coverage is limited to the required functional area. Metal charging contacts, electrical pads, alignment features and connector mating surfaces can remain accurately exposed.
Critical Charging Interface Design Points
Contact Exposure
The mold must keep conductive contacts and charging surfaces free from silicone while controlling the exposed position and height.
Sealing Compression
The silicone sealing lip should match the device housing and provide controlled compression without interfering with assembly.
Insert Positioning
Plastic carriers, metal contacts and FPC inserts require stable mold positioning to reduce offset, deformation and silicone overflow.
Electrical Isolation
Silicone coverage can separate adjacent contact areas and protect selected regions without affecting the required electrical connection.
Product Parameters
| Item | Specification |
| Product Type | LSR Overmolded Charging Interface Seal |
| Silicone Material | Liquid Silicone Rubber / LSR |
| Substrate | Plastic Carrier / Metal Contact / FPC |
Process | LSR Insert Molding / Silicone Overmolding |
Main Function | Sealing / Insulation / Cushioning / Strain Relief |
Interface Type | Charging Contact / Charging Port / Custom Interface |
Silicone Hardness | Customized According to Application |
Color | Black / Transparent / Custom Color |
Waterproof Requirement | Evaluated with Final Device Assembly |
Custom Input | 2D Drawing / 3D File / Physical Sample |
Service | OEM/ODM Custom Manufacturing |
MOQ | 500 pcs |
Plastic, Metal Contact and FPC Overmolding Options
Different charging interface designs require different insert and sealing structures.
A silicone over plastic structure can integrate the sealing lip with a rigid plastic carrier. Silicone over metal can protect selected areas around charging contacts while leaving conductive surfaces exposed. FPC with silicone overmolding can seal the flexible circuit transition area and provide local strain relief.
Before tooling, our engineers review substrate compatibility, insert tolerances, silicone coverage boundaries, shut-off areas, gate position, venting and demolding direction.
Typical Wearable and Electronic Applications
Smart Watches
Used for rear charging contacts, magnetic charging interfaces and compact housing sealing structures.
Smart Rings
Suitable for miniature charging modules and compact interfaces where silicone coverage and exposed contact positions require precise control.
Health Trackers
Applied to wearable monitoring devices that require sweat resistance, flexible sealing and stable charging contact alignment.
Beauty and Personal Devices
Suitable for rechargeable beauty devices, personal care equipment and other compact 3C electronics silicone overmolding projects.
Inspection and Production Control
Inspection should focus on charging contact exposure, insert position, silicone coverage, sealing lip dimensions, flash, contamination and visible bonding defects.
Sample validation can include dimensional inspection, assembly testing, electrical contact checks, sealing evaluation and repeated charging-cycle verification according to the customer’s requirements.
SiliconePlus manufacturing capacity supports custom mold development, LSR injection molding, insert positioning, sample validation and OEM/ODM mass production.
Send Your Charging Interface Design for Evaluation
Please provide the charging interface drawing, plastic carrier or FPC file, metal contact dimensions, silicone coverage area, device housing structure and estimated order quantity.
The project information should also include the assembly method, charging contact areas that must remain exposed, operating environment and required waterproof or sealing test.
Contact SiliconePlus for DFM review, custom tooling, sample production and quotation for your wearable charging interface overmolding project.
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- Nearest port for product export
- Yantian (shenzhen,guangdong, china), Shekou (shenzhen,guangdong, china)
- Delivery clauses under the trade mode
- FOB
- Acceptable payment methods
- T/T, L/C, MoneyGram, PayPal, Westem Union, Cash, Escrow