Custom LSR Overmolded Cable Strain Relief Seal | Waterproof Wire Harness Seal
group nameAutomotive Silicone Overmolding
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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 timeWed, 23 Sep 2026 08:05:14 GMT
Paramtents
Product Type Cable Strain Relief Seal
Silicone Material Liquid Silicone Rubber (LSR)
Substrate Engineering Plastic / Cable Assembly
Molding Process LSR Overmolding / Insert Molding
Sealing Function Waterproof Sealing / Strain Relief / Dust Protection
Application Automotive Wire Harness / EV Electronics / Industrial Connectors
Waterproof Requirement IP67 / IP68 Design Support
Custom Service OEM / ODM / Drawing-Based Manufacturing
Packging & Delivery
Min Order1 piece
Briefing
Custom LSR overmolded cable strain relief seals for wire harness waterproofing, vibration protection and OEM cable entry sealing projects.
Detailed
Product Overview
Custom LSR overmolded cable strain relief seals are designed to protect cable entry areas from water, dust, vibration and long-term mechanical stress.
In this structure, liquid silicone rubber is molded directly onto the specified area of an engineering plastic part or cable outlet region to form an integrated sealing and protection feature.
Compared with separately assembled rubber sleeves or standard grommets, LSR overmolding can help improve positioning accuracy, sealing consistency and assembly efficiency.
This type of solution is commonly used in automotive wire harnesses, EV electronic systems, sensor cable outlets and industrial connector assemblies.
Why Use an LSR Overmolded Cable Strain Relief Seal
Cable outlet areas are often one of the weakest sealing points in an electrical assembly.
During service, these areas may be exposed to repeated bending, vibration, moisture, dust and temperature cycling. If the cable exit is not properly sealed and supported, long-term failure risks may include leakage, cable movement, wear and unstable assembly performance.
A custom LSR overmolded cable strain relief seal can help provide:
Waterproof sealing around cable entry points
Mechanical strain relief
Vibration resistance
Dust protection
Better assembly repeatability
Reduced need for secondary sealing components
For broader connector sealing applications, you can also review our custom automotive connector silicone seal solutions.
Cable Entry Sealing Area
Front or angled product view showing the silicone overmolded sealing area around the cable outlet or interface zone.
Silicone-to-Plastic Bonding Detail
Close-up detail showing the integrated silicone sealing boundary, plastic substrate and the controlled overmolded transition area.
Material and Structure
The base part is typically produced from an engineering plastic selected according to mechanical, thermal and electrical requirements. Liquid silicone rubber is then molded onto the required sealing or cable-support area to form an integrated functional structure.
Typical design features may include:
Defined cable exit sealing area
Controlled compression profile
Silicone-to-plastic overmolding boundary
Anti-movement support geometry
Waterproof sealing lips or ribs
Cable stress transition structure
Custom hardness and color options
Drawing-based custom dimensions
For projects involving silicone bonded to engineering plastic structures, you can also review our plastic with silicone overmolding capability page.
Typical Applications and Customization
Custom LSR overmolded cable strain relief seals can be developed for:
Automotive wire harness systems
EV battery and charging cable assemblies
Sensor cable outlet sealing
Automotive control modules
Industrial connector cable entry points
Outdoor electronic equipment
Customization can include cable diameter, sealing profile, compression structure, silicone hardness, substrate geometry, bonding area, waterproof target and assembly conditions.
For similar automotive silicone overmolding projects, you may also browse our automotive silicone overmolding products.
Custom automotive connector silicone seal for waterproof wire harness and EV connector applications with OEM/ODM molding support.
Custom automotive connector peripheral seal with LSR housing gasket for IP67/IP68 waterproof connectors and OEM custom manufacturing.
Our automotive silicone parts are manufactured using LSR combined with engineering substrates (plastic or metal) to achieve optimal functionality.
Automotive Silicone Overmolding Solutionsservices for silicone components tailored for the automotive industry.
Custom LSR silicone overmolding for automotive parts OEM silicone manufacturer providing customizable solutions
Start Your Project
To request a quotation, please send us your 2D/3D drawing, sample, cable size, target application, waterproof requirement and estimated order quantity.
Our team can support design review, sealing structure analysis and custom LSR overmolding development based on your cable entry or wire harness 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