Certified Standards For Silicone Cord
Legensilico Silicone Cord - Your Best Choice
- Diameter range from 1 mm to 40 mm
- -60°C to 250°C operating temperature
- Excellent sealing performance
- OEM/ODM services available
- Certified by FDA, UL, ISO, etc
Reliable Silicone Cord Manufacturer in China
Legensilico silicone cord maintains excellent flexibility in extreme temperatures ranging from -60°C to 250°C and prevents liquid or gas leakage. This makes it the best choice for sealing. You can use it for high-temperature sealing, high-pressure insulation, food processing, and other demanding applications.
The food-grade silicone cord we manufacture is odorless and non-toxic, making it suitable for industries such as food and medical. When you want to customize colors, we will use food-grade color powder. They always comply with FDA, LFGB, and UL standards. You don’t need to worry that special needs will affect the safety of silicone cord.
At the same time, you can also choose commercial grade silicone cords with lower production costs. They are also able to withstand high and low temperatures, durable, weather-resistant, and chemically inert. Legensilico always guarantees you quality and complies with ISO 9001 standards.
Take it easy and just go for it!
Options of Legensilico Silicone Cord Manufactured
The following are cases we have handled over the past six months.
Legensilico provides solid silicone cord in a variety of colors, sizes, and shapes. We also accept all kinds of customization to meet your specific application. Please feel free to request a free quote at any time.
The outer diameter and hole diameter of Legensilico hollow silicone cord can be customized. The hollow cross-section makes it easier to compress. They can help alleviate tolerances while providing significantly lower compression forces than solid ones.
Legensilico silicone foam cord maintains its sealing properties in high-temperature environments. Its closed-cell structure effectively prevents the absorption of water, air, and gases. These pores also enhance the cushioning effect, protecting your equipment.
Silicone sponge cord provides the most effective solution for sealing and cushioning with the simplest shape. With a round, uniform contour and the elasticity of open-cell sponge, it provides effective assistance for your special needs in demanding environments.
Legensilico O-ring silicone cord has a circular cross-section. It is commonly used in non-moving machinery and static sealing applications. You can cut it to any length according to your needs to ensure a good seal.
This solid silicone cord has a square cross-section, which increases the contact area. It improves the sealing and cushioning properties of your equipment in applications with high precision requirements.
Customizing the color of Legensilico silicone cord to black enhances its weather resistance, especially in terms of UV resistance. At the same time, the wear resistance and dirt resistance of black silicone cord also increase its competitiveness.
Legensilico translucent silicone cord does not obstruct your view, allowing you to visually check the internal status. The ability to visualize the device is its most prominent advantage. Please contact us as soon as possible for customization.
We can add additives visible to metal detectors to silicone rings. This allows you to easily identify products during production, especially whether food contains rubber contaminants. You can choose it for the safety of equipment and personnel.
Our silicone cords have a wide operating temperature range. They can maintain their weather resistance, flexibility, and other properties at temperatures as high as 250°C. They are your best choice for high-temperature environments.
Why You Should Choose Legensilico Silicone Cord
A professional silicone cord manufacturer with over 20 years of experience in China

The outer surface of Legensilico silicone cords is very smooth. This makes them very easy to clean and prevents dirt from accumulating. They also effectively inhibit the growth of bacteria, ensuring your safety.

Our silicone cords are extremely lightweight and flexible, making them easy to handle and install in practical applications. They are ideal for use in spaces with complex shapes. They fill all gaps to create a sealed environment.

Silicone cord typically uses Shore hardness as its hardness measurement index. The Shore hardness of Legensilico silicone cord ranges from 40 to 90. You can customize any hardness to meet your needs.

Our silicone rubber cord has a tear strength of 22 N/mm and an elongation at break of 400%. Its excellent tear resistance ensures that the silicone rubber cord performs well in both static and dynamic sealing applications.

Legensilico silicone cords have excellent chemical inertness. They do not emit toxic substances and are not corrosive to other materials. They are resistant to ultraviolet rays, fungi, and ozone.

Our silicone cords are flame resistant and produce low smoke and low toxicity even when burning. Their flame retardant properties comply with international standards, including UL 94, ASTM E162, etc.

The dielectric strength of Legensilico silicone cords is 23kV.mm-1. Such excellent insulation performance can ensure the safety and operation of your electrical equipment and the safety of your personnel.

Legensilico silicone cords can remain stable in various harsh environments. They are not easy to fade and have a service life of more than 10 years. It can reduce the frequency of product replacement for you and save costs.
Flexible Customization for Your Needs
Legensilico can provide you with professional and sophisticated customization services. You only need to tell us your needs and our professionals can realize them for you:
- Shape: square, round, o-ring, solid, hollow, foam
- Color: transparent, translucent, black, red, blue, etc.
- Size: inner diameter, outer diameter, length, tolerance
- Size Unit: metric and imperial sizes
- Hardness: from 40 Shore A to 90 Shore A


Highly Efficient Manufacturing Process
Legensilico uses extrusion molding to manufacture silicone cord. We use a silicone extruder to extrude the silicone raw material through the extruder head. The extruded silicone can be cut at will. This process has high production efficiency, controllable product quality, and low mold cost investment. It is your most cost-effective choice for silicone cord.
Your Most Ideal Silicone Cord Supplier From China
Legensilico has more than ten years of experience in silicone wire manufacturing. It has a 20,000 square meter modern production workshop equipped with eight large assembly lines, with a daily output of 1 million parts and a total daily production capacity of 200,000 pieces. With a 99.5% delivery rate, you don’t have to worry about whether your order can be completed on time. Please place your order with confidence!
How We Turn Silicone Into Reliable Products
We support customized silicone products from mold design and material selection to mass production and final quality inspection.
- Manufacturing Process
The difference in geometric shape results in the square cross-section silicone cords to produce a larger contact area than the ordinary round silicone cords. Therefore, this type of silicone cords has better sealing and buffering effects. However, the round silicone cords require greater compression force to achieve the same effect.
On the other hand, square silicone cords require rectangular grooves with high dimensional accuracy for installation. They face issues such as stress concentration and high frictional resistance, making them less suitable for dynamic sealing applications that require relative movement. In this regard, round silicone cords perform better.
Whether you have special requirements in terms of color, size, or other aspects, please feel free to contact us. We have a team of professional engineers who are available 24 hours a day to provide you with the perfect solution. With over 20 years of experience in customizing silicone cords, you can trust us.
Legensilico silicone cords are of high quality, long service life, chemical inertness, strong safety, high temperature resistance and good weather resistance. They can adapt to work in various harsh environments. Therefore, they can be used in many high-end fields such as electronics, transportation, food, medical treatment, aerospace, etc.
Specifically, silicone cords are often used in oven seals, high temperature seals, electrical enclosure seals, harsh environment gaskets, lighting gaskets, automotive enclosure seals, glass and shower door seals, HVAC seals and food processing machinery. They can be formed into O-rings or specific shapes and sizes.





















