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High-temperature extrusion

High-temperature silicone tubing

Silicone tubes and hoses with thermal stability above the standard formulations. Continuous service up to +300 °C with peaks of +315 °C. Dedicated formulations for industrial ovens, autoclaves, vulcanising equipment and hot-process machinery.

Contacte con nosotrosVer especificaciones técnicas
Max. temperature+300 °C continuous · +315 °C peaks
Hardness40–70 Shore A
CertificationsFDA (depending on formulation)
Full range–60 °C to +300 °C

The +300 °C figure refers to Series 9 (native formulation). Series 2 and 12 reach +300 °C / +315 °C with HT additive. Consult formulation depending on requirements.

The product

Above +200 °C standard VMQ silicone degrades; Series 9 formulations (+300 °C native) and Series 20 (+270 °C with high tear strength) hold their properties under continuous service.

Standard VMQ silicones (Series 2, Series 12) hold their mechanical properties up to +200 °C under continuous service. Above that temperature, the polymer chain degrades progressively: the tube hardens, loses elasticity, cracks and eventually fails. When the operating temperature exceeds +200 °C, a formulation designed specifically for sustained thermal stability is required.

High-temperature silicone tubing
High-temperature silicone tubing
High-temperature silicone tubing
High-temperature silicone tubing
High-temperature silicone tubing

Specifications

Dimensional tolerance
ISO 3302-1 · class E1 / E2 · lengths L2
Inner diameter
2 to 100 mm · wall thickness from 1 to 8 mm
Continuous temperature
+200 °C (standard) · +230 °C (Series 7) · +270 °C (Series 20) · +300 °C (Series 9)
Peak temperature
+315 °C with Series 9 or standard + HT additive
Hardness
40 to 70 Shore A
Post-curing
Oven post-curing required to reach nominal thermal stability
Management system
ISO 9001:2015
Food contact
FDA 21 CFR 177.2600 (Series 9 · Series 12 with compatible HT additive)
Restricted substances
REACH (1907/2006) · RoHS (2015/863)
Construction

The type of HT tube is defined by the formulation and by the presence of reinforcement or additive

Construction

  • 01Single layer
  • 02Braid-reinforced
  • 03High tear
  • 04HT additive
Materials

Formulations for continuous high-temperature service

Series 9 – Peroxide-cure silicone with excellent thermal resistance (300°C)

Series 9 is a peroxide-cured silicone compound formulated specifically to deliver excellent thermal stability. It is processable by extrusion and moulding. Its main feature is the ability to operate across a wide temperature range, withstanding from -60°C to +300°C in continuous service, with short peaks up to 315°C. It is the ideal material for oven equipment and industrial applications with high thermal demands.

Peroxide-cured silicone with excellent thermal resistance, suitable for continuous use up to +300 °C and short peaks of +315 °C. Offers strong mechanical properties and stability across a wide temperature range (-60 °C to +300 °C). Recommended for oven applications, profiles and moulded parts subjected to high temperatures.

Shore A hardness40 – 68
Temperature range-60 °C / 300 °C
Peak temperature315 °C
Density (g/cm³)1.11 – 1.20
Tensile strength (MPa)6.0 – 8.0
Elongation at break (%)300 – 400
Tear strength (kN/m)12.0 – 17.0
Curing systemPeroxide
Processing methodExtrusion and Moulding
Base colourNatural / Transparent
Available coloursRAL colours on request

Applications

  • Profiles, industrial oven equipment, moulded parts and extreme thermal applications.

Certifications and technical standards

  • FDA 21 CFR §177.2600
  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • ISO 3302 (M2/E1/L2)

Series 20 – Peroxide silicone with high tear and high thermal resistance (270°C)

Series 20 is a peroxide-cured silicone compound that combines two critical properties: excellent tear strength and high thermal stability. It is processable by extrusion and moulding. This dual formulation makes it ideal for applications requiring both mechanical durability and high-temperature resistance (up to +270°C), such as inflatable gaskets in ovens or profiles under tension in hot environments.

Shore A hardness45 – 70
Temperature range-60 °C / 270 °C
Density (g/cm³)1.12 – 1.20
Tensile strength (MPa)7.0 – 8.0
Elongation at break (%)400 – 550
Tear strength (kN/m)30.0 – 36.0
Curing systemPeroxide
Processing methodExtrusion and Moulding
Base colourNatural / Transparent

Applications

  • Inflatable gaskets, profiles, high-temperature moulded parts.

Certifications and technical standards

  • FDA 21 CFR §177.2600
  • RoHS compliant
  • REACH compliant

Series 7 – Peroxide silicone with high tear and abrasion resistance

Series 7 is a peroxide-cured silicone compound designed to deliver superior mechanical properties, specifically high tear strength and good abrasion resistance. It is processable by both extrusion and moulding. Thanks to its toughness, it is the material of choice for manufacturing inflatable gaskets, bellows and profiles subjected to friction or severe stretching, operating across an extended thermal range from -60°C to +230°C.

Peroxide-cured silicone with very high tear strength and good abrasion resistance. Offers excellent mechanical and thermal properties (-60 °C to +230 °C), suitable for inflatable gaskets, bellows, profiles and moulded parts subjected to mechanical stress.

Shore A hardness60 – 70
Temperature range-60 °C / 230 °C
Density (g/cm³)1.19
Tensile strength (MPa)6.9 – 8.0
Elongation at break (%)400 – 400
Tear strength (kN/m)30.0 – 35.0
Curing systemPeroxide
Processing methodExtrusion and Moulding
Base colourNatural / Transparent
Available coloursRAL colours on request

Applications

  • Inflatable gaskets, profiles, moulded parts and industrial bellows.

Certifications and technical standards

  • FDA 21 CFR §177.2600
  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • ISO 3302 (M2/E1/L2)

Series 12 – Platinum-cure silicone with strong mechanical properties and versatility

Series 12 is a platinum-cured silicone compound processable by extrusion and moulding, recognised for its strong mechanical properties. It offers a very wide hardness range (10 to 90 Shore A) and food-contact compliance. A notable feature is that suction tubes manufactured with the EQ1260T grade are validated for integration into medical devices requiring CE marking.

Platinum-cured silicone with excellent mechanical properties and broad hardness availability. Processable by extrusion and moulding, compatible with food contact and medical applications (depending on formulation).

Shore A hardness20 – 90
Temperature range-60 °C / 200 °C
Peak temperature315 °C
Density (g/cm³)1.11 – 1.20
Tensile strength (MPa)6.0 – 9.0
Elongation at break (%)100 – 1000
Tear strength (kN/m)17.0 – 30.0
Curing systemPlatinum
Processing methodExtrusion and Moulding
Base colourNatural / Transparent
Available coloursRAL colours on request

Applications

  • Tubes (Øint 0.5–145 mm), profiles (cords, square, rectangular), moulded parts and industrial or medical applications.

Certifications and technical standards

  • FDA 21 CFR §177.2600
  • BfR IX and XV
  • CE 1935/2004
  • ISO 10993 (depending on formulation)
  • USP Class VI
  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • ISO 3302 (M2/E1/L2)

Series 2 – Peroxide-cure silicone for general and food-grade use

Series 2 is a peroxide-cured silicone compound designed for versatile processing by extrusion and moulding. It stands out for an exceptionally wide hardness range (10 to 90 Shore A) and the option of food-contact compliance depending on the formulation.

Peroxide-cured silicone compound. Provides excellent thermal stability and the option of food-contact or medical-grade use depending on the formulation.

Shore A hardness10 – 90
Temperature range-60 °C / 200 °C
Peak temperature315 °C
Density (g/cm³)1.07 – 1.23
Tensile strength (MPa)3.5 – 9.5
Elongation at break (%)125 – 950
Tear strength (kN/m)10.0 – 23.0
Curing systemPeroxide
Processing methodExtrusion and Moulding
Base colourNatural / Transparent
Available coloursRAL colours on request

Applications

  • Tubes (Øint 0.5–145 mm), profiles (cords, square, rectangular), moulded parts and varied industrial applications.

Certifications and technical standards

  • FDA 21 CFR 177.2600
  • BfR IX and XV
  • CE 1935/2004 (Food contact)
  • ISO 10993 (medical grade depending on formulation)
  • USP Class VI
  • RoHS compliant
  • REACH compliant
  • NF ISO 7619-1
  • NF ISO 37
  • NF ISO 34-1
  • NF ISO 2781
  • ISO 3302 (M2/E1/L2)
Thermal post-curing

Nominal thermal stability is reached in the oven, after extrusion

High-temperature formulations use peroxide curing, which leaves volatile residues after vulcanising. Static oven post-curing at controlled temperature and time — specific to each series — removes those residues and stabilises the polymer structure. Without this step, mechanical properties at high temperature degrade prematurely and the tube does not reach its nominal service life.

Each batch is supplied with formulation identification, maximum service temperature and a conformity certificate with full process traceability, including extrusion and post-curing parameters.

Services and processes

Processes that support HT tube extrusion

Cut-to-length Service Cut-to-length Learn more → Seal vulcanising Service Seal vulcanising Learn more → Extrusion Process Extrusion Learn more → Design and tooling Process Design and tooling Learn more →
Catalogue

Other silicone tubes in the catalogue

Industrial silicone tubing Product Industrial silicone tubing Learn more → Reinforced silicone tubing Product Reinforced silicone tubing Learn more → Automotive silicone hoses Product Automotive silicone hoses Learn more → Custom silicone profiles Product Custom silicone profiles Learn more →
Need a high-temperature silicone tube?

Tell us the continuous service temperature and the peaks, the required diameter, the conveyed fluid and whether there is any additional mechanical loading — pressure, vibration, abrasion. We confirm the most suitable formulation and the estimated service life for your application.

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