Home Custom ProductsLSR Overmolding Plastic Overmolded with Silicone

Leak-proof liquid silicone encapsulation for electronic cigarette devices

Leak-proof liquid silicone encapsulation for electronic cigarette devices

Liquid silicone rubber (LSR) encapsulated plastic leak-proof components for e-cigarettes are made with food-grade liquid silicone material, ensuring a completely non-toxic and harmless process, and are FDA-approved. Utilizing a one-piece molding process, the elastic seal and rigid frame are integrated. This fundamentally solves the long-standing problems of oil leakage and condensate seepage in the e-cigarette industry, ensuring cleanliness and reliability throughout the product's entire lifecycle.

Key Features

Food-grade liquid silicone
Liquid silicone encapsulation molding process
IP68 waterproof rating
Resistant to high and low temperatures, extremely chemically inert and corrosion-resistant
Precise dimensions, dimensional tolerances controllable within ±0.02mm
Safe and environmentally friendly, the entire process is non-toxic and harmless, and FDA certified.

Send Inquiry

Product Description

Product Overview

Shenzhen ES Electronic Co., Ltd. offers customized liquid silicone rubber (LSR)-encapsulated leak-proof components for electronic cigarettes. This process utilizes precision liquid injection molding to seamlessly bond food-grade LSR to a high-strength plastic substrate, creating a rigid-flexible integrated composite sealing structure.

Leveraging micron-level precision molds and fully automated injection molding, the LSR layer is uniformly coated (with wall thickness tolerance controlled within ±0.02mm) onto the key bonding surfaces of the plastic skeleton, physically eliminating the risk of delamination caused by thermal expansion and contraction in traditional bonding processes.

Regarding material safety, this component uses food-grade addition-cured LSR, fully compliant with RoHS, REACH, and FDA food contact standards. This ensures that no odor or harmful substances are released under highly acidic or alkaline e-liquid conditions or high-temperature atomization environments, making it safe and non-toxic.

Core Advantages

1.Shenzhen ES Electronic Co., Ltd. customizes liquid silicone sealant (LSR)-coated plastic leak-proof components for e-cigarettes using a precision injection molding and high-temperature vulcanization process. This technology precisely coats a seamless liquid silicone sealing layer with a thickness controllable from 0.5mm to 3mm onto the surface of a rigid plastic frame, achieving IP67/IP68 waterproof and dustproof performance.

2. The liquid silicone provides the component with excellent flexibility (wide temperature range of -50℃ to 200℃), superior weather resistance, chemical stability, and biocompatibility, ensuring safe and reliable long-term contact with e-liquid. The plastic frame provides high-strength structural support, guaranteeing dimensional stability.

3.Shenzhen ES Electronic Co., Ltd. utilizes high-precision molds and complex one-piece molding technology to achieve precise positioning and coating of LSR in any irregularly shaped plastic location, greatly increasing product design freedom while eliminating leakage and assembly errors from the outset.

Application & Custom Service

Liquid silicone-coated plastic parts for electronic cigarettes are mainly used for sealing atomizer bases, connecting cartridges to the battery, sealing oil filling/air vents, and coating mouthpieces (bite tips).

Shenzhen ES Electronic Co., Ltd.'s liquid silicone-coated plastic parts are also used in consumer electronics and smart wearables, the automotive industry, medical devices, and industrial and electrical engineering fields.

Customization & Ordering Information

1.Fully Customized Products: All ES Silicone products are custom-made based on customer requirements.

2.MOQ Requirements: MOQ varies by product category, structure, and production requirements. Typically, orders start from 100 pieces.

3.Prototype & Mass Production: We support prototype validation before mass production. Reasonable prototype fees apply and may be credited for qualified projects.

4.Engineering Support: Our engineering team provides DFM evaluation to optimize product feasibility and ensure stable production.

5.More Project Cases: Website examples represent selected non-confidential projects. Contact us for more customized applications and solutions.

6.Learn More About ES Silicone: Discover our capabilities and workflow through Who We Are and How We Work.

Hot Tags: Liquid silicone rubber overmolded plastic parts,Silicone overmolding, silicone coating, liquid silicone overmolding, silicone overmolding manufacturers, silicone overmolding plastic manufacturers

Bicycle light handle with plastic coated in silicone

The silicone-coated plastic bicycle light grip is a functional handlebar accessory specifically designed for bicycle light mounting and rider grip. It features a composite molding process with an outer silicone layer and an inner hard plastic base layer. The outer silicone layer provides anti-slip and shock absorption, while the inner plastic layer is strong and durable. This achieves improved performance in terms of anti-slip properties, shock absorption, and weather resistance, comprehensively enhancing safety and comfort for daytime commutes and nighttime riding. It is a lightweight, cost-effective essential upgrade accessory for cyclists.

Waterproof Outdoor Silicone Overmolded Buttons for Infrared Telescopes

This silicone-overmolded plastic button is applied to outdoor infrared telescopes of high-end global brands. It is manufactured via liquid silicone rubber (LSR) secondary molding technology.This effectively provides waterproofing, heat resistance, wear resistance, and impact resistance, making them suitable for various hot or cold environments.

Massager Conductive Silicone Sleeve

This conductive silicone sleeve was custom-molded to meet the specific functional requirements of the massager's components. To satisfy the need for electrical conduction at the electrode pads located at both ends of the neck area, we employed specialized silicone processing techniques; this ensures that the inner silicone pad facilitates conduction at the ends—where it interfaces with the electrodes—while providing insulation in the center. This design enables the precise transmission of the electrical stimulation, pressure, and kneading forces generated by the electrode pads.

Liquid silicone encased plastic massage brush

Shenzhen ES Electronic Co., Ltd.'s custom-made silicone-coated massage brushes utilize a liquid silicone coating process, tightly integrating soft, food-grade liquid silicone with a high-strength plastic frame (such as PC, PA, PPSU, PBT, etc.) into a single unit. While ensuring structural stability and durability, this provides an extremely soft touch to the skin, offering a professional, comfortable, and safe massage solution.

Tell Us About Your Project

Share your requirements - we’ll provide practical solutions, engineering support, and samples.