Custom PA + LSR Overmolded Connector Seal | Liquid Silicone Waterproof Sealing Component
- group name
- Automotive Silicone Overmolding
- Min Order
- 1 piece
- brand name
- SiliconePlus | Silicone OverMolding Manufacturing
- 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
- update time
- Wed, 23 Sep 2026 08:40:10 GMT
Paramtents
Product Type PA + LSR Overmolded Connector Seal
Base Material PA Plastic Connector Frame
Overmolding Material Liquid Silicone Rubber (LSR)
Molding Process LSR Overmolding / Insert Molding
Sealing Structure Integrated Multi-Lip Seal
Application Automotive Connector / Electronic Connector
Waterproof Performance IP67 / IP68 Design Support
Custom Service OEM / ODM / Drawing-Based Manufacturing
Packging & Delivery
-
Min Order1 piece
Briefing
Custom PA + LSR overmolded connector sealing component designed for waterproof automotive and electronic connector applications. Supports OEM development, integrated sealing design and drawing-based manufacturing.
Detailed
Product Overview
Custom PA + LSR overmolded connector seals are engineered for waterproof connector assemblies that require stable sealing, compact structure and repeatable mass production.
This component combines a PA plastic connector frame with liquid silicone rubber overmolding to form an integrated sealing area. Compared with separate gasket assembly, this structure helps reduce assembly steps and improve sealing consistency.
The product is suitable for automotive connectors, industrial electronic connectors and other applications that require reliable environmental sealing under complex working conditions.
Why Use PA + LSR Overmolding for Connector Sealing?
For connector sealing applications, a separate silicone gasket may increase assembly complexity and create tolerance variation during installation. By overmolding liquid silicone directly onto the plastic substrate, the sealing area can be positioned more accurately and integrated into the connector structure.
Main benefits may include:
Integrated sealing structure
Fewer assembly steps
Better sealing repeatability
Stable silicone-to-plastic interface
Flexible sealing lip design
Support for customized geometry and hardness
For more connector-related sealing projects, you can also review our custom automotive connector silicone seal solutions and broader LSR overmolding capability pages.
Material Combination
The base structure is made from PA engineering plastic, which provides mechanical strength and dimensional stability. Liquid silicone rubber is overmolded onto the defined sealing area to create a flexible waterproof interface.
Sealing Structure Detail
The integrated silicone section can be designed with multiple sealing ribs or compression features according to the connector geometry, mating conditions and waterproof target.
Material and Structural Design Considerations
In this type of LSR overmolding project, the sealing result is determined not only by the silicone material itself, but also by the complete structural design.
Typical engineering considerations include:
Plastic insert geometry
Bonding or retention structure
Multi-lip sealing profile
Compression allowance
Mating surface tolerance
Mold shut-off design
Flash control
Positioning accuracy
Final assembly environment
The silicone area should be placed only in the required sealing zone, while the functional openings and structural positions of the connector remain available for their intended use.
Typical Applications
This type of custom PA + LSR overmolded sealing component can be used in:
Automotive connector systems
New energy vehicle connector assemblies
Sensor connectors
Industrial control connectors
Electronic interface sealing parts
Waterproof electrical housings
If your project also involves other integrated sealing components, you can review our silicone over plastic molding solutions and related connector waterproof sealing projects.
Custom automotive connector silicone seal for waterproof wire harness and EV connector applications with OEM/ODM molding support.
Our automotive silicone parts are manufactured using LSR combined with engineering substrates (plastic or metal) to achieve optimal functionality.
Start Your Project
To request a quotation, please send us your 2D/3D drawing, plastic substrate information, silicone sealing requirements, application details and estimated order quantity.
Our engineering team can support DFM review, tooling development and custom LSR overmolding production.