Custom Automotive Connector Peripheral Seal | LSR Overmolded Housing Gasket Manufacturer
Item specifics
- Product Type
- Automotive Connector Peripheral Seal
- Base Material
- PA66 / PBT Connector Housing
- Overmolding Material
- Liquid Silicone Rubber (LSR)
- Sealing Type
- Perimeter Seal / Housing Gasket
- Molding Process
- LSR Overmolding / Insert Molding
- Waterproof Performance
- IP67 / IP68 (depending on design)
- Hardness Range
- 30–70 Shore A Customizable
- Custom Service
- OEM / ODM / Drawing-Based Manufacturing
Review
Description
Product Overview
Custom automotive connector peripheral seals are designed to create a reliable waterproof boundary between the plastic connector housing and the mating interface. This product is manufactured by overmolding liquid silicone rubber (LSR) onto an engineering plastic substrate to form a continuous sealing lip around the connector face.
Why Use an LSR Peripheral Seal
Compared with separate rubber rings or manually assembled gaskets, an LSR overmolded housing gasket offers more stable positioning, cleaner sealing boundaries and better assembly consistency. The silicone is formed only where sealing is required, while the terminal cavities and electrical contact areas remain open and functional. This structure is widely used in waterproof automotive electrical connectors exposed to vibration, dust, moisture and temperature cycling.
Material and Structure
The housing is typically made of engineering plastics such as PA66 or PBT, while the sealing area is made of liquid silicone rubber. The silicone is overmolded around the connector perimeter to create a continuous sealing path. Typical design features include a continuous perimeter sealing lip, stable bonding between silicone and plastic, open terminal cavities, and support for IP67 or IP68 sealing targets depending on the final assembly design.
For more sealing structure examples, you can also refer to our custom automotive connector silicone seal solutions and our LSR overmolding manufacturing capability.
Manufacturing Capability
SiliconePlus supports custom development from drawing review to tooling, sampling and mass production. We can help optimize the bonding boundary, sealing compression area and housing structure based on your application requirements. Our service supports OEM / ODM production, 2D / 3D drawing review, DFM feedback, prototype sampling, mass production and material customization.
You can also review our liquid silicone rubber injection molding capability for broader custom projects, or directly contact us for quotation support.
Typical Applications and Customization
This type of overmolded connector housing gasket is widely used in EV battery systems, automotive lighting connectors, sensor connectors, ECU housings, wire harness interfaces and other waterproof electrical assemblies. We can customize connector shape, cavity count, sealing lip geometry, silicone hardness, plastic substrate material, color and waterproof performance targets according to your drawing or sample.
If your project also involves other sealed components, you may also be interested in our EV charging inlet terminal seal and ECU housing waterproof seal solutions.
Custom automotive connector silicone seal for waterproof wire harness and EV connector applications with OEM/ODM molding support.
Custom LSR overmolded EV charging terminal seals for charging inlets, supporting waterproofing and electrical protection.
Custom LSR overmolded ECU housing seal for waterproof, dustproof and vibration-resistant automotive electronics.
Start Your Project
To get a quotation, please send us your 2D/3D drawing, sample, target application, testing requirements and estimated order quantity. Our team can support engineering review and propose a suitable LSR overmolding solution based on your connector design.
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