Silicone in Manufacturing

Silicone is a versatile and durable material widely used across various industries due to its exceptional properties, including heat resistance, flexibility, and biocompatibility.

Align Manufacturing, we specialize in manufacturing silicone components outside of China, leveraging our trusted network of factories across Southeast Asia, including Vietnam, India, and Thailand.

Our deep expertise in managing the entire production process ensures high-quality products delivered on time and within budget.

Brief Overview

To produce high-quality silicone, the process begins with the careful selection of raw materials. The primary raw material is metallurgical-grade quartz or gravel, which consists of about 99.5% silica. This material is blended with a carbon source and heated in an electric furnace at around 1800°C. This high-temperature process, known as a reduction process, removes oxygen from the silicon dioxide, resulting in silicon and carbon monoxide. The silicon obtained can be in powder or liquid form and serves as the foundational element for all silicone products. This step is crucial for ensuring the purity and performance of the final silicone material​.

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Once silicon is produced, it undergoes further chemical processes to create silicone. This involves reacting silicon powder with methyl chloride to produce methyl chlorosilane, a critical compound in silicone production.

Through a distillation process, the mixture is separated into various chlorosilanes, and then hydrolyzed to produce polydimethylsiloxane. This compound forms the backbone of silicone, with the siloxane bonds giving silicone its unique properties. Depending on the required grade and application, this polymer can be processed into different forms, such as resins, fluids, or rubbers, each with specific characteristics tailored for various industrial applications.

Silicone Manufacturing Processes

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Compression Molding

Compression molding is a time-tested process used to produce high-volume silicone parts. In this method, pre-measured amounts of silicone are placed into a heated mold cavity. The mold is then closed, and pressure is applied to shape the silicone into the desired form. This process is particularly effective for producing robust and durable components like gaskets and seals, which require precise dimensional stability and excellent mechanical properties.

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Liquid Injection Molding (LIM)

Liquid Injection Molding (LIM) is a cutting-edge process ideal for high-precision silicone parts. In LIM, liquid silicone rubber (LSR) is injected into a mold under high pressure. The process is highly automated, making it suitable for producing complex and intricate parts with tight tolerances. LIM is especially advantageous for manufacturing medical-grade components due to its ability to produce clean, consistent, and high-quality parts in a controlled environment.

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Extrusion Molding

Extrusion molding is used to create continuous lengths of silicone products, such as tubes, cords, and profiles. In this process, silicone is forced through a die of the desired cross-sectional shape and then cured. Extrusion molding is highly efficient for producing parts that need to be cut to length, offering excellent material consistency and uniformity.

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Overmolding

Overmolding involves bonding silicone to another material, such as metal or plastic, to create a composite part. This process is critical in applications where different materials need to work together seamlessly, such as in medical devices or automotive components. Overmolding enhances the functionality of the final product by combining the unique properties of silicone with those of other materials.

Popular Silicone Parts

Seals

Silicone seals are essential components in various industries, including automotive, aerospace, and electronics, where they provide reliable sealing against environmental factors like moisture, dust, and extreme temperatures. Align MFG specializes in producing silicone seals that meet stringent industry standards, ensuring long-lasting performance and durability.

Gaskets

Silicone gaskets are widely used for their flexibility, resilience, and ability to maintain a seal under high-pressure conditions. These gaskets are ideal for applications in harsh environments, such as engines, machinery, and electronic enclosures. Our expertise in silicone gasket manufacturing ensures products that deliver superior sealing capabilities and withstand prolonged exposure to chemicals, heat, and UV radiation.

Bushings

Silicone bushings are used to reduce vibration, noise, and wear in machinery and automotive applications. The material’s elasticity and resistance to environmental factors make silicone bushings a preferred choice for applications requiring reliable performance under dynamic conditions. We produce high-quality silicone bushings tailored to the specific requirements of each application, ensuring optimal functionality and longevity.

Bellows

Silicone bellows are flexible connectors that protect mechanical systems from contaminants and compensate for misalignment or movement between parts. These components are essential in applications where flexibility, durability, and environmental resistance are critical, such as in the medical, industrial, and automotive sectors. Our silicone bellows are designed to provide exceptional performance and durability, even in the most demanding conditions.

Plugs

Silicone plugs are used in a wide range of applications, from medical devices to industrial equipment, where they provide reliable sealing and protection. The material’s non-reactive nature and ability to withstand sterilization processes make silicone plugs ideal for medical and laboratory environments. Align MFG manufactures silicone plugs that meet stringent quality standards, ensuring safe and effective use in critical applications.

Silicone Materials

High Voltage Insulation Silicone Rubber

High Voltage Insulation Silicone Rubber

This material is specifically designed for electrical applications, offering superior insulation properties and resistance to high temperatures and environmental stress. High voltage insulation silicone rubber is widely used in power transmission and distribution systems, providing reliable performance and safety in high-voltage environments.

In power transmission and distribution systems, these materials are critical for insulating components such as cables, bushings, and transformers. Their ability to withstand electrical stress without losing insulating properties ensures the reliability and safety of high-voltage equipment.

Feature Description
Polysiloxane Chains The "heavy" polysiloxane chains in High Voltage Insulation Silicone Rubber contribute to its exceptional mechanical stability and elasticity. These long-chain molecules are key to the material's ability to maintain flexibility under electrical and thermal stress. The structure also enhances the material's dielectric strength, making it highly effective in insulating against high-voltage currents.
Heat Resistance and Hardness High Voltage Insulation Silicone Rubber is renowned for its ability to withstand extreme temperatures, typically up to 200°C or more. The incorporation of specific fillers into the silicone matrix not only boosts its thermal resistance but also increases hardness, allowing the material to resist physical and environmental wear. This is crucial for applications exposed to prolonged heat, UV radiation, and ozone.
Curing Agents The curing of High Voltage Insulation Silicone Rubber can be achieved through platinum or peroxide catalysts. Platinum-cured silicones are known for their superior elongation and low compression set, maintaining flexibility and resilience over time. Peroxide-cured silicones, on the other hand, tend to offer slightly better mechanical strength and resistance to extreme conditions, making them suitable for high-performance electrical insulation applications.
Electrical Insulation This material offers exceptional dielectric strength, ensuring reliable performance in high-voltage environments. It prevents electrical discharges and provides a robust barrier against current leakage, making it indispensable for components like insulators, gaskets, and cable accessories in power distribution systems.
Aging and Weather Resistance High Voltage Insulation Silicone Rubber exhibits excellent resistance to aging factors such as UV radiation, ozone exposure, and environmental pollutants. This ensures that the material retains its insulating properties and mechanical integrity even after long-term exposure to outdoor conditions, making it ideal for use in outdoor electrical installations and power systems.
Chemical and Environmental Resistance The rubber’s resistance to a wide range of chemicals, including oils, solvents, and corrosive substances, ensures that it remains stable and functional in harsh industrial environments. This feature is particularly important for high-voltage applications where the material might be exposed to various chemicals and environmental stresses.

Medical Grade Silicone Rubber

Medical Grade Silicone Rubber

Medical grade silicone rubber is biocompatible and safe for use in medical devices and implants. Its non-reactive nature, flexibility, and resistance to sterilization processes make it ideal for applications such as catheters, seals, and medical tubing. Align MFG ensures that all medical-grade silicone products meet the highest standards of safety and quality, making them suitable for use in critical healthcare applications.

Liquid Silicone Rubber (LSR)

Liquid Silicone Rubber (LSR)

Liquid Silicone Rubber (LSR) is a versatile material that offers excellent thermal stability, chemical resistance, and flexibility. LSR is ideal for manufacturing intricate and high-precision components, such as seals, gaskets, and medical devices. The material’s ability to maintain its properties over a wide temperature range makes it suitable for a variety of demanding applications.

Why Choose Align Manufacturing?

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Cost-Effective and Reliable

By sourcing outside of China and leveraging our network of factories in Vietnam, India, and Thailand, we offer cost-effective manufacturing solutions without compromising on quality. Our reliable supply chain and efficient project management processes ensure that your products are delivered on time and within budget.

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Proven Track Record

Align MFG has a proven track record of delivering high-quality silicone components for a wide range of industries, including oil and gas, railway, construction and more. Our ability to meet tight tolerances, handle complex projects, and deliver consistent quality has earned us the trust of clients worldwide.

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Expertise and Experience

With over 10 years of experience in managing silicone, plastic and metal manufacturing projects across Southeast Asia, Align MFG is a trusted partner for companies seeking high-quality industrial components. We have a deep understanding of the manufacturing processes and the specific requirements of different industries, allowing us to deliver customized solutions that meet your exact needs.

Partner with Align MFG


Ready to start your next silicone manufacturing project? Contact Align MFG today to discuss your requirements and discover how we can provide the reliable products you need. Fill out the contact form below, and our team will get back to you promptly to discuss your project in detail.