Certified Standards For Silicone Filament
Features of Legensilico Silicone Filament
- Odorless and suitable for applications requiring low-emission materials
- Excellent tensile strength, elasticity, and tear resistance
- Low shrinkage, excellent elasticity, and dimensional stability
- Good resistance to sunlight, ozone, moisture, and corrosion
Legensilico-Silicone Filament Manufacturer & Custom Silicone Filament Supplier
Silicone filaments manufactured by Legensilico offer excellent flexibility, elasticity, temperature resistance, weather resistance, and chemical stability. With our in-house silicone processing and custom manufacturing capabilities, we can produce silicone filaments in a wide range of specifications—including diameter, hardness, color, length, and material grades—to meet diverse application requirements. Every batch undergoes strict quality control and is 100% bubble-free.
Send us your requirements today to receive a custom quotation and sample solution.
Silicone Filament in Different Grades
Legensilico can supply different silicone filaments based on material, performance, and application requirements.
Manufactured using silicone materials selected for food-contact applications where applicable regulatory requirements need to be met.
Developed for specific medical and healthcare applications using appropriate silicone grades and compliance requirements.
Designed for applications requiring enhanced resistance to elevated temperatures.
Designed for applications where improved flame resistance is required, subject to the specified formulation and testing standard.
Silicone Filament in Different Colors
Silicone filament can be produced in a wide range of colors to meet product design, identification, and branding requirements. Common options include:
Red filament provides high visual contrast and can be used for product identification, warning components, prototypes, and customized silicone parts.
Green filament can be used for product differentiation, visual identification, prototypes, and customized silicone components.
Blue silicone filament is suitable for consumer products, industrial components, prototypes, and color-coded applications.
Clear silicone filament designed for applications where visual appearance or material transparency is important.
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
- Specifications
| Base Material | Silicone Rubber |
| Shore Hardness | 10A to 60A (customizable) |
| Elongation at Break | ≥400% |
| Tensile Strength | ≥6 MPa |
| Working Temperature | -50°C to 200°C |
| Surface Finish | Smooth / Custom |
| Material Grade | Medical-grade, food-grade, industrial-grade |
| Diameter Tolerance | ±0.05 mm |
| Color | Natural / Black / Custom |
| Certification | ISO 9001, ROHS, REACH |
What Is Silicone Filament?
Silicone filament is a continuous, flexible silicone material formed into a filament or cord-like profile for applications requiring elasticity, durability, temperature resistance, and reliable long-term performance. Compared with many conventional plastic materials, silicone maintains its flexibility across a wider temperature range and provides excellent resistance to UV exposure, moisture, and environmental conditions.
Is silicone filament the same as 3D printing filament?
No. Conventional silicone filament is not the same as thermoplastic 3D printing filament. Silicone generally requires specialized extrusion and curing processes rather than standard FDM melting.
Silicone Filament vs TPU: Key Differences
Both silicone and TPU are flexible materials, but they have different performance characteristics and are suitable for different applications. The choice depends on factors such as temperature resistance, elasticity, chemical resistance, durability, processing methods, and specific application requirements.
| Feature | Silicone Filament | TPU Filament |
| Flexibility | Excellent | Excellent |
| Elasticity | Very high | High |
| Temperature Resistance | Excellent | Moderate to good |
| UV & Weather Resistance | Excellent | Moderate to good |
| Chemical Resistance | Excellent | Good |
| Moisture Resistance | Excellent | Good |
| Long-Term Flexibility | Excellent | Good |
| Electrical Insulation | Excellent | Good |
| Soft-Touch Feel | Soft and rubber-like | Flexible and slightly tougher |
| Abrasion Resistance | Good | Excellent |
| Typical Applications | Sealing, medical, automotive, industrial, flexible components | 3D printing, footwear, protective parts, flexible prototypes |
If you need exceptional temperature resistance, elasticity, weather resistance, and long-term flexibility, choose silicone filament.
If you prioritize wear resistance, toughness, and thermoplastic processing properties—especially in flexible 3D printing applications—choose TPU filament.
What Makes Legensilico Silicone Filament Different?
High Flexibility and Elasticity
Silicone filaments can be repeatedly bent, stretched, and restored to their original shapes, making them suitable for flexible components and applications requiring frequent movement.
Multiple Shore Hardness Options
Available in Shore A hardness levels from 10A to 60A, depending on application requirements. For the same geometry, silicone typically feels much softer to the touch than TPU.
Wide Temperature Range
Operating temperatures range from -50°C to 200°C, with stable performance maintained even under sustained high temperatures.
Consistent Diameter Tolerance (±0.05 mm)
Strict manufacturing processes help ensure that the diameter, hardness, surface finish, and overall quality of each batch of silicone filament remain consistent.
Chemical Resistance
Silicone is resistant to a wide range of common chemicals, oils, moisture, and environmental contaminants. Material selection can be tailored to specific applications.
Electrical Insulation
Silicone is inherently a good electrical insulator, making silicone filament suitable for certain specific electrical and electronic applications.
Wide Applications of Silicone Filament
Electrical and Electronic
Used for flexible insulation, protective components, cable-related applications, and other electrical components that require the flexibility and insulating properties of silicone.
Industrial Equipment
Silicone filament can be used in flexible assemblies, sealing applications, protective components, and equipment exposed to temperature or environmental fluctuations.
Medical & Healthcare Applications
Silicone filament can be used for selected medical and healthcare components where appropriate silicone grades, processing conditions, and regulatory requirements are met.
Automotive Applications
Silicone filament is suitable for selected automotive applications requiring flexibility, temperature resistance, vibration resistance, and weather durability.
Consumer Products
Custom silicone filament can be applied to household products, accessories, flexible components, and other products requiring a soft feel and elasticity. Silicone filament is an ideal choice for making waterproof seals, flexible hinges, wristbands, and protective components.
Silicone Filament Manufacturing Process
Legensilico controls the production process from material preparation through final inspection to maintain consistent product quality.
Material Selection → Silicone Compounding → Forming/Extrusion → Curing → Cooling → Dimensional Inspection → Cutting or Winding → Final Inspection → Packaging
Production parameters can be adjusted according to the required diameter, hardness, surface finish, and application performance.
Yes. Silicone is naturally flexible and elastic. Silicone filament can bend repeatedly and recover its shape, making it suitable for applications that require continuous flexibility or movement. Different hardness levels can be selected to achieve the desired balance between softness, flexibility, and mechanical strength.
Legensilico can manufacture silicone filament in customized diameters according to customer requirements. The available size depends on the product design, manufacturing process, and application. Customers can provide a drawing, sample, or required dimensions for evaluation.
Legensilico can manufacture silicone filament in customized diameters according to customer requirements. The available size depends on the product design, manufacturing process, and application. Customers can provide a drawing, sample, or required dimensions for evaluation.
Silicone itself has good resistance to water and moisture. Silicone filament can therefore be suitable for applications exposed to water, humidity, or condensation.
Yes, but conventional silicone filament is generally not compatible with standard FDM 3D printers because silicone does not melt and resolidify like thermoplastic filaments. Specialized silicone 3D-printing systems typically use extrusion and curing processes.
Yes. Legensilico can produce silicone filament in different colors according to customer requirements. Common options include black, white, red, green, blue, and clear/translucent silicone, while custom colors can also be developed for specific products or branding requirements.
Yes. Legensilico supports both OEM and ODM silicone filament projects. OEM production can follow customer drawings, samples, or specifications, while ODM projects can include assistance with material selection, dimensions, hardness, color, and manufacturing solutions.
Yes. Silicone filament can be supplied in formats such as coils, spools, rolls, or customized packaging depending on the filament size and customer requirements. Packaging can also be customized for transportation, storage, or retail applications.
MOQ depends on the filament specifications, material, color, production process, and order quantity. Legensilico can evaluate small-batch sample requirements as well as larger OEM production orders. Contact us with your specifications and required quantity for a customized MOQ quotation.
Lead time depends on the material, specifications, tooling or process requirements, order quantity, and whether a new formulation or sample is required. After reviewing your specifications, Legensilico can provide an estimated sample and production schedule.
