What makes silicone a preferred material for high-temperature and flexible applications in industrial environments?

Silicone is widely used because it maintains flexibility, elasticity, and performance across a wide temperature range, including both high and low extremes. It resists degradation from UV exposure, ozone, and environmental conditions that affect many other elastomers. In practice, silicone provides reliable long-term performance in applications where thermal stability and flexibility are critical.

How does silicone perform across manufacturing processes such as compression molding, injection molding, and extrusion?

Silicone is primarily processed through molding and extrusion. Compression molding and liquid injection molding are commonly used to produce seals, gaskets, and complex components with consistent properties. Extrusion is used for tubing, profiles, and continuous seals. Machining is typically limited to secondary operations due to the material’s flexibility, so most final geometries are defined during molding.

What types of parts and applications are typically produced using silicone in industrial and commercial environments?

Silicone is commonly used for seals, gaskets, O-rings, medical components, tubing, keypads, and protective covers. It is especially valuable in applications requiring high-temperature resistance, flexibility, and biocompatibility. It is widely used in medical devices, food processing equipment, electronics, and automotive systems where environmental exposure is a key factor.

How does silicone compare to other elastomers like EPDM, nitrile, and natural rubber in real-world applications?

Compared to EPDM, silicone offers better high-temperature performance but lower mechanical strength. Compared to nitrile, silicone has superior temperature resistance but lower resistance to oils and fuels. Compared to natural rubber, silicone provides better environmental stability and does not degrade as quickly under UV exposure. These differences make silicone ideal for applications where temperature extremes and environmental resistance are more important than mechanical strength.

What finishing and secondary operations are compatible with silicone components?

Silicone components are typically used as-molded, with minimal finishing required. Secondary operations may include trimming, bonding, and assembly with inserts or other materials. Surface treatments can be applied depending on the application, but most functional properties are defined during the molding process. High-precision features are generally achieved through mold design rather than post-processing.

What design and engineering considerations are important when working with silicone in production programs?

When designing with silicone, engineers should consider hardness (durometer), compression set, and exposure to oils, chemicals, and temperature extremes. Geometry should account for flexibility and deformation under load. Tolerances are typically broader than rigid materials, and mold design plays a critical role in achieving consistent results. When ordering your part, selecting the appropriate silicone grade, including medical or food-grade variants, is essential for compliance and long-term performance.

Flexible Material

Silicone for High-Temperature & Sealing Applications

Silicone is a high-performance elastomer known for its exceptional temperature resistance, flexibility, and stability across demanding environments.

Quote Now

Silicone seals, gaskets, and molded flexible components

Loading…

Manufacturing services

Flexible Material

Silicone for High-Temperature & Sealing Applications

Silicone is a high-performance elastomer known for its exceptional temperature resistance, flexibility, and stability across demanding environments.

Quote Now

Material Overview

What is Silicone?

Silicone is a high-performance elastomer known for its outstanding thermal stability, flexibility, and resistance to environmental conditions. Unlike many other rubber materials, silicone maintains its mechanical properties across a wide temperature range and offers excellent resistance to UV, ozone, and weathering. It is widely used in injection molding, production molding, and prototype molding for seals, gaskets, and custom molded components. Silicone is also commonly processed through sheet cutting for gaskets and pads in high-temperature or sensitive environments such as medical, food-grade, and electronic applications.

Silicone molded components and flexible sealing parts

Specifications

Silicone Specifications

Engineering-grade properties of silicone, including mechanical, thermal, and chemical characteristics relevant to sealing, high-temperature performance, and flexible components. This data supports material selection for applications requiring stability and durability across extreme conditions.

Silicone Engineering Properties

Material Type

Elastomer (silicone rubber)

Primary Characteristics

Excellent thermal stability, flexible, UV-resistant, chemically stable

Tensile Strength

500–1,500 psi (varies by grade)

Elongation at Break

100–500%

Hardness

Shore A 20–80

Density

1.1–1.3 g/cm³

Continuous Service Temperature

-60 °C to 200–230 °C (-76 °F to 446 °F)

Thermal Stability

Excellent (retains properties across wide temperature range)

Compression Set

Good (maintains sealing performance over time)

UV & Weather Resistance

Excellent

Chemical Resistance

Good (resistant to many chemicals; not ideal for strong solvents or fuels)

Electrical Insulation

Excellent

Biocompatibility

Available in medical and food-grade formulations

Machinability

Limited (soft material; machining rarely used)

Common Forms

Sheets, molded parts, extrusions

Typical Applications

Seals, gaskets, medical components, insulation, high-temp parts

Performance

Material Performance Overview

Standardized comparison across key functional and material criteria.

Strength

Flexibility

Impact Resistance

Thermal Resistance

UV Resistance

Chemical Resistance

Electrical Insulation

Cost Efficiency

Ready to produce silicone components?

Upload your CAD files and get a fast, engineering-reviewed quote. From prototypes to production, we help you move faster.

Where Silicone is Commonly Used

Silicone is widely used in applications that require flexibility, thermal stability, and environmental resistance. It is especially common in high-temperature, medical, and sealing environments.

High-temperature seals and gaskets

Medical and food-grade components

Electrical insulation parts

Flexible connectors and tubing

Automotive sealing systems

Outdoor and UV-exposed components

Thermal insulation and protection

Consumer and industrial molded parts

Custom elastomeric components

Material FAQs

Silicone FAQs for Manufacturing and Industrial Applications

Common questions about working with silicone across molding, sealing, medical, and high-temperature applications.

Material Guide

Silicone: Properties, Processing, and Applications

Silicone is a high-performance elastomer widely used in applications requiring temperature stability, flexibility, and environmental resistance. Unlike standard rubber materials, silicone maintains its properties across a wide temperature range and offers excellent resistance to UV, ozone, and aging. It is commonly processed through plastic part production, including compression and injection molding, as well as sheet cutting and limited CNC machining services for custom components.

In practice, silicone is often selected when consistent performance under temperature extremes, cleanliness, and long-term stability are more important than mechanical strength or cost.

Key manufacturing characteristics of silicone

Wide temperature resistance: Performs reliably in both high and low temperature environments.
Excellent environmental stability: Resistant to UV, ozone, and weathering.
High flexibility: Maintains elasticity over long service life.
Biocompatibility options: Suitable for medical and food-grade applications.
Multiple processing methods: Commonly produced through molding, extrusion, and cutting.
Stable material properties: Less prone to degradation compared to standard rubber.

Mechanical and physical properties of silicone

Silicone is typically selected for temperature stability and environmental resistance. Compared to general-purpose rubber, it offers superior thermal performance and aging resistance. Compared to thermoplastics like polycarbonate, it provides flexibility but significantly lower strength and stiffness.

Typical performance profile

High elasticity across a wide temperature range
Excellent resistance to UV, ozone, and aging
Low mechanical strength compared to rigid materials
Stable performance in harsh environments
Good electrical insulation properties

Why engineers choose it

Performs in extreme temperature environments
Maintains flexibility over long service life
Suitable for medical, food, and clean applications
Provides reliable sealing and insulation

Strengths and advantages of silicone

Thermal stability: Maintains performance across extreme temperatures.
Environmental resistance: Resistant to UV, ozone, and weathering.
Long-term durability: Retains properties over extended use.
Biocompatibility: Suitable for medical and food-grade applications.
Electrical insulation: Performs well in electronic applications.
Flexible material behavior: Ideal for seals, gaskets, and flexible components.

Trade-offs and limitations of silicone

Lower mechanical strength: Not suitable for load-bearing applications.
Higher cost than standard rubber: More expensive than materials like EPDM.
Lower tear resistance: Can be more prone to tearing under mechanical stress.
Limited wear resistance: Not ideal for high-friction or abrasive environments.
Dimensional variability: Not suitable for tight tolerance applications.

Fabrication and processing considerations for silicone

Molding and production

Silicone is most commonly produced through plastic part production, including compression and injection molding processes for high-performance components.

Suitable for high-volume production of seals and flexible parts
Supports complex geometries and thin-wall designs
Material properties can be tailored through formulation

Machining and cutting

Silicone can be processed through sheet cutting and limited CNC machining services for custom parts.

Waterjet cutting is commonly used for sheet silicone
Soft material requires careful handling
Precision machining is more challenging than rigid materials

Sealing and insulation applications

Excellent for gaskets, seals, and O-rings
Maintains performance under thermal cycling
Suitable for electrical insulation systems

Environmental considerations

Resistant to UV, ozone, and outdoor exposure
Performs well in clean and sterile environments
Suitable for food and medical applications

Common applications for silicone

Silicone is widely used in applications requiring temperature stability, flexibility, and environmental resistance.

Seals and gaskets
Medical and food-grade components
Electrical insulation parts
High-temperature seals and connectors
Flexible tubing and connectors
Consumer and industrial products
Cleanroom and semiconductor components

When silicone is a strong material choice

Silicone is often the right choice when temperature stability, environmental resistance, and long-term flexibility are more important than strength or cost.

When operating across extreme temperature ranges
When UV or environmental exposure is a concern
When biocompatibility or food safety is required
When long-term durability and flexibility are needed
When sealing performance must remain consistent over time

Material Overview

What is Silicone?

Specifications

Silicone Specifications

Silicone Engineering Properties

Material Type

Elastomer (silicone rubber)

Primary Characteristics

Excellent thermal stability, flexible, UV-resistant, chemically stable

Tensile Strength

500–1,500 psi (varies by grade)

Elongation at Break

100–500%

Hardness

Shore A 20–80

Density

1.1–1.3 g/cm³

Continuous Service Temperature

-60 °C to 200–230 °C (-76 °F to 446 °F)

Thermal Stability

Excellent (retains properties across wide temperature range)

Compression Set

Good (maintains sealing performance over time)

UV & Weather Resistance

Excellent

Chemical Resistance

Good (resistant to many chemicals; not ideal for strong solvents or fuels)

Electrical Insulation

Excellent

Biocompatibility

Available in medical and food-grade formulations

Machinability

Limited (soft material; machining rarely used)

Common Forms

Sheets, molded parts, extrusions

Typical Applications

Seals, gaskets, medical components, insulation, high-temp parts

Performance

Material Performance Overview

Standardized comparison across key functional and material criteria.

Strength

Flexibility

Impact Resistance

Thermal Resistance

UV Resistance

Chemical Resistance

Electrical Insulation

Cost Efficiency

Ready to produce silicone components?

Upload your CAD files and get a fast, engineering-reviewed quote. From prototypes to production, we help you move faster.

Where Silicone is Commonly Used

Silicone is widely used in applications that require flexibility, thermal stability, and environmental resistance. It is especially common in high-temperature, medical, and sealing environments.

High-temperature seals and gaskets

Medical and food-grade components

Electrical insulation parts

Flexible connectors and tubing

Automotive sealing systems

Outdoor and UV-exposed components

Thermal insulation and protection

Consumer and industrial molded parts

Custom elastomeric components

Material FAQs

Silicone FAQs for Manufacturing and Industrial Applications

Common questions about working with silicone across molding, sealing, medical, and high-temperature applications.

Material Guide

Silicone: Properties, Processing, and Applications

Key manufacturing characteristics of silicone

Wide temperature resistance: Performs reliably in both high and low temperature environments.
Excellent environmental stability: Resistant to UV, ozone, and weathering.
High flexibility: Maintains elasticity over long service life.
Biocompatibility options: Suitable for medical and food-grade applications.
Multiple processing methods: Commonly produced through molding, extrusion, and cutting.
Stable material properties: Less prone to degradation compared to standard rubber.

Mechanical and physical properties of silicone

Typical performance profile

High elasticity across a wide temperature range
Excellent resistance to UV, ozone, and aging
Low mechanical strength compared to rigid materials
Stable performance in harsh environments
Good electrical insulation properties

Why engineers choose it

Performs in extreme temperature environments
Maintains flexibility over long service life
Suitable for medical, food, and clean applications
Provides reliable sealing and insulation

Strengths and advantages of silicone

Thermal stability: Maintains performance across extreme temperatures.
Environmental resistance: Resistant to UV, ozone, and weathering.
Long-term durability: Retains properties over extended use.
Biocompatibility: Suitable for medical and food-grade applications.
Electrical insulation: Performs well in electronic applications.
Flexible material behavior: Ideal for seals, gaskets, and flexible components.

Trade-offs and limitations of silicone

Lower mechanical strength: Not suitable for load-bearing applications.
Higher cost than standard rubber: More expensive than materials like EPDM.
Lower tear resistance: Can be more prone to tearing under mechanical stress.
Limited wear resistance: Not ideal for high-friction or abrasive environments.
Dimensional variability: Not suitable for tight tolerance applications.

Fabrication and processing considerations for silicone

Molding and production

Silicone is most commonly produced through plastic part production, including compression and injection molding processes for high-performance components.

Suitable for high-volume production of seals and flexible parts
Supports complex geometries and thin-wall designs
Material properties can be tailored through formulation

Machining and cutting

Silicone can be processed through sheet cutting and limited CNC machining services for custom parts.

Waterjet cutting is commonly used for sheet silicone
Soft material requires careful handling
Precision machining is more challenging than rigid materials

Sealing and insulation applications

Excellent for gaskets, seals, and O-rings
Maintains performance under thermal cycling
Suitable for electrical insulation systems

Environmental considerations

Resistant to UV, ozone, and outdoor exposure
Performs well in clean and sterile environments
Suitable for food and medical applications

Common applications for silicone

Silicone is widely used in applications requiring temperature stability, flexibility, and environmental resistance.

Seals and gaskets
Medical and food-grade components
Electrical insulation parts
High-temperature seals and connectors
Flexible tubing and connectors
Consumer and industrial products
Cleanroom and semiconductor components

When silicone is a strong material choice

Silicone is often the right choice when temperature stability, environmental resistance, and long-term flexibility are more important than strength or cost.

When operating across extreme temperature ranges
When UV or environmental exposure is a concern
When biocompatibility or food safety is required
When long-term durability and flexibility are needed
When sealing performance must remain consistent over time