Flexible hot-air hoses for every temperature range
Fluoropolymer and silicone tubes & hoses are extremely durable: highly flexible and elastic with consistently strong mechanical properties, resistant to high temperatures and capable of withstanding numerous aggressive chemicals. Depending on the hose type, hot-air hoses made of silicone (specifically silicone-coated fiberglass fabric), modified fluoralkoxy (MFA), fluorinated ethylene propylene (FEP), perfluoroalkoxy (PFA), polyvinylidene fluoride (PVDF) and polytetrafluoroethylene (PTFE) are available for use at temperatures of up to +310 °C.
Strictly speaking, all of these products could even be described as universal hot-media hoses, since they transport both liquid and gaseous media. As a long-standing specialist, Reichelt Chemietechnik also offers special hot-water hoses for hot water or hot chemicals, where standard chemical tubing is not sufficient.
In addition, numerous hot-air hoses are available in antistatic designs, allowing them to be used in explosion-protected production areas.
With thermal and mechanical resistance close to absolute zero, some of the fluorinated hose types even prove to be excellent cold-air hoses: vacuum hoses made of FEP, MFA, PFA and PTFE are resistant down to –200 °C, with some versions even down to –270 °C, spanning a remarkable thermal range of more than 400 K.
Due to their material properties, many of the fluoropolymer hot-air hoses are flame-retardant and physiologically safe. Since they comply with the strict requirements of FDA, BfR and the European Pharmacopoeia, some exhaust hoses made of FEP or PTFE are approved as food-grade and medical tubing.
Vacuum hoses made of silicone: Resistant up to +310 °
The flexible silicone hot-air products from Reichelt Chemietechnik are THOMASIL products – more about the history, synthesis and versatile applications of silicone rubber can be found in our online magazine.
Silicone hoses are highly flexible and elastic while also offering high and consistent mechanical strength. Even at elevated temperatures, the material properties remain unchanged. These are extremely robust and also suitable for vacuum applications.
The base material is a silicone-coated fiberglass fabric that can be used in the range from –85 °C to +310 °C. For stabilization, they are lined with an internal spiral made of galvanized spring steel. Depending on hose dimensions, the suction hoses have a vacuum resistance of 0.3 to 7.0 mWS at +20 °C. The red vacuum hoses are abrasion-resistant, weatherproof, and resistant to aging as well as ozone. Production units are limited to a maximum length of 4 meters, but they can be factory-extended by splicing.
Suction hoses made of FEP: Reliable up to +200 °C
FEP corrugated tubes with smooth ends are suitable for temperatures from –260 °C to +200 °C. With these hot-air hoses, flexible, movable connections can be made to apparatuses in laboratories, pilot plants and production facilities that also withstand vibrations, shocks and confined spaces. Thanks to their high chemical resistance, they serve as (mobile) suction hoses for harmful gases and vapors. In this way, the exhaust hoses offer a wide range of applications as tight, controllable duct connections on machinery and apparatus in cleanroom technology, nuclear technology, biotechnology and genetic engineering.
The flexible hot-air tubes withstand use under normal conditions, low overpressure or vacuum. Due to the material properties and the smooth, anti-adhesive inner surface, the fluorinated ethylene propylene tubes are free of extractable components, physiologically safe and comply with FDA regulations.
Corrugated tubes made of MFA: Resistant up to +240 °C
Extremely flexible corrugated tubes made of MFA are used in the automotive industry under the highest thermal and electrical loads. They are also valued in chemical engineering, apparatus and mechanical engineering, and electrical engineering for their mechanical strength. In the chemical industry, they serve as suction hoses for aggressive vapors and gases. The black hot-air tubes retain their shape across the entire temperature range from –200 °C to +240 °C. Hot-air tubes made of flame-retardant, highly resistant modified fluoralkoxy are resistant to UV radiation and classified in fire class UL 94 V0.
Exhaust hoses made of PFA: Flexible connections up to +250 °C
The translucent to clear hot-air tubes made of perfluoroalkoxy are used in explosion-protected areas (Ex protection), for transferring liquids and gases, for conveying solvents and alcohol, and to compensate for thermally induced longitudinal expansion. They are also used as flexible connection tubes on movable apparatus in laboratories, research and industrial operations. PFA corrugated tubes cover a temperature range from –200 °C to +250 °C. The absolutely non-porous tubing is temperature-, weather- and ozone-resistant as well as resistant to all corrosive substances and solvents. Particularly noteworthy are the extremely small bending radii of 15 to 35 mm (depending on hose dimension).
PFA corrugated tubes with smooth ends are equipped with cylindrical end pieces for adaptation to tube & hose connectors.
Hot-air hoses made of PTFE: Highly resistant up to +260 °C
Polytetrafluoroethylene (PTFE) is a fluoropolymer with outstanding resistance to acids, alkalis, solvents and gases. Depending on mechanical and chemical stress, the material is thermally resistant up to +260 °C.
PTFE products are widely used in:
• the pharmaceutical industry as pharmaceutical hoses
• medical technology as medical hoses
• the food industry as food-grade hoses
• process engineering as chemical hoses
• semiconductor technology
• biotechnology
• microelectronics
PTFE corrugated tubes are resistant to almost all inorganic and organic media and gases. At the same time, the hot-air tubing is non-toxic, free of any extractable components, physiologically safe and comply with FDA and BfR standards. Their operating temperature ranges from –65 °C to +260 °C. Depending on the desired hose dimensions, minimum bending radii from 16 mm to 83 mm are possible.
PTFE corrugated tubes with smooth ends feature cylindrical fittings that allow connection with THOMAFLUID pipe connectors. Their operating temperature range is –70 °C to +260 °C – briefly even up to +280 °C – and they can be sterilized with hot air at +134 °C. Another advantage is their particularly high gas tightness.
With a special fluoropolymer compound developed against electrostatics for semiconductor technology, PTFE Antista corrugated tubes can be manufactured. Their formulation with 25% carbon powder (alloyed) ensures a discharge resistance of <10⁶ ohms. This hot-air tubing is suitable for operating temperatures between –200 °C and +260 °C. The minimum bending radius is between 38 mm and 134 mm, depending on hose dimensions.
Warm-air hoses made of PVDF: Highly durable up to +150 °C
For the protection of lines in stationary installation – particularly under unfavorable environmental conditions – highly resilient materials are required. With flexible yet mechanically robust PVDF corrugated tubes, aggressive yet sensitive liquid and gaseous media can be conveyed, even on moving and vibrating equipment. Therefore, polyvinylidene fluoride hoses are preferred as warm-air hoses in the temperature range from –60 °C to +150 °C, especially in:
• mechanical engineering
• apparatus engineering and process technology
• electronics
• semiconductor manufacturing
• environmental research
• environmental analytics
• biotechnology
• nuclear technology and radiochemistry
Hot-air products made of highly resistant PVDF are flame-retardant (fire class UL 94 V0), extremely strong and abrasion-resistant. They show the highest chemical resistance to almost all aggressive media such as halogens, ozone, strong acids and alkalis or solvents like aromatic hydrocarbons. The flexible warm-air hoses are biocompatible, free of extractable components and sterilizable at +121 °C.
Ventilation tubing made of EPDM/PP: Constantly resistant up to +125 °C
Durable ventilation tubing conducts and conveys aggressive chemical vapors, hot air, smoke and gas in the temperature range from –40 °C to +125 °C – while it can also briefly withstand temperatures up to +150 °C. It is also suitable for engine ventilation. The warm-air hoses are made of the thermoplastic elastomer EPDM/PP (THOMAPREN, Santoprene®), which shows high resistance to inorganic and organic media. The exhaust hoses contain an embedded steel wire spiral as a pressure carrier. The flexible ventilation hoses are available with inside diameters from 50 mm to 152 mm.
How does the temperature resistance arise?
The temperature resistance of the materials described is based on their molecular structure. In fluoropolymers (PTFE, PFA, FEP, MFA), the strong carbon-fluorine bonds ensure exceptional thermal stability. Silicones owe their heat resistance to the flexible silicon-oxygen backbone of their polymer chains and the crosslinking of the molecules. PVDF achieves its thermal resistance through partial fluorination, while EPDM/PP is thermally resilient due to its crosslinked structure and the combination of saturated polymer chains.
The highest temperature resistance is shown by silicone hoses at up to +310 °C, followed by PTFE at +260 °C (briefly +280 °C), PFA at +250 °C and MFA at +240 °C. FEP is resistant up to +200 °C, PVDF up to +150 °C and EPDM/PP up to +125 °C (briefly +150 °C). Also remarkable is the low-temperature resistance: many fluoropolymers can be used down to –200 °C or even –270 °C, silicone down to –85 °C, PVDF down to –60 °C and EPDM/PP down to –40 °C.
Buy high-performance hot-air products from rct-online.de/en
Order hot-air hoses, silicone hoses, corrugated tubes, suction hoses and vacuum hoses quickly and easily in our online shop. All hot-air products are shipped immediately from stock, even in small quantities without minimum order surcharges. The hoses are also available in short lengths.
If you have any questions, please call us at +49 (0)6221-31250 or contact us by e-mail. Our hose specialists will be happy to advise you. Together we will find the right hose for your systems and machinery. Further chemical and technical information on the thermoplastics offered can be found in our electronic resistance list and our extensive glossary.
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Flexible hot-air hoses for every temperature range
Fluoropolymer and silicone tubes & hoses are extremely durable: highly flexible and elastic with consistently strong mechanical properties, resistant to high temperatures and capable of withstanding numerous aggressive chemicals. Depending on the hose type, hot-air hoses made of silicone (specifically silicone-coated fiberglass fabric), modified fluoralkoxy (MFA), fluorinated ethylene propylene (FEP), perfluoroalkoxy (PFA), polyvinylidene fluoride (PVDF) and polytetrafluoroethylene (PTFE) are available for use at temperatures of up to +310 °C.
Strictly speaking, all of these products could even be described as universal hot-media hoses, since they transport both liquid and gaseous media. As a long-standing specialist, Reichelt Chemietechnik also offers special hot-water hoses for hot water or hot chemicals, where standard chemical tubing is not sufficient.
In addition, numerous hot-air hoses are available in antistatic designs, allowing them to be used in explosion-protected production areas.
With thermal and mechanical resistance close to absolute zero, some of the fluorinated hose types even prove to be excellent cold-air hoses: vacuum hoses made of FEP, MFA, PFA and PTFE are resistant down to –200 °C, with some versions even down to –270 °C, spanning a remarkable thermal range of more than 400 K.
Due to their material properties, many of the fluoropolymer hot-air hoses are flame-retardant and physiologically safe. Since they comply with the strict requirements of FDA, BfR and the European Pharmacopoeia, some exhaust hoses made of FEP or PTFE are approved as food-grade and medical tubing.
Vacuum hoses made of silicone: Resistant up to +310 °
The flexible silicone hot-air products from Reichelt Chemietechnik are THOMASIL products – more about the history, synthesis and versatile applications of silicone rubber can be found in our online magazine.
Silicone hoses are highly flexible and elastic while also offering high and consistent mechanical strength. Even at elevated temperatures, the material properties remain unchanged. These are extremely robust and also suitable for vacuum applications.
The base material is a silicone-coated fiberglass fabric that can be used in the range from –85 °C to +310 °C. For stabilization, they are lined with an internal spiral made of galvanized spring steel. Depending on hose dimensions, the suction hoses have a vacuum resistance of 0.3 to 7.0 mWS at +20 °C. The red vacuum hoses are abrasion-resistant, weatherproof, and resistant to aging as well as ozone. Production units are limited to a maximum length of 4 meters, but they can be factory-extended by splicing.
Suction hoses made of FEP: Reliable up to +200 °C
FEP corrugated tubes with smooth ends are suitable for temperatures from –260 °C to +200 °C. With these hot-air hoses, flexible, movable connections can be made to apparatuses in laboratories, pilot plants and production facilities that also withstand vibrations, shocks and confined spaces. Thanks to their high chemical resistance, they serve as (mobile) suction hoses for harmful gases and vapors. In this way, the exhaust hoses offer a wide range of applications as tight, controllable duct connections on machinery and apparatus in cleanroom technology, nuclear technology, biotechnology and genetic engineering.
The flexible hot-air tubes withstand use under normal conditions, low overpressure or vacuum. Due to the material properties and the smooth, anti-adhesive inner surface, the fluorinated ethylene propylene tubes are free of extractable components, physiologically safe and comply with FDA regulations.
Corrugated tubes made of MFA: Resistant up to +240 °C
Extremely flexible corrugated tubes made of MFA are used in the automotive industry under the highest thermal and electrical loads. They are also valued in chemical engineering, apparatus and mechanical engineering, and electrical engineering for their mechanical strength. In the chemical industry, they serve as suction hoses for aggressive vapors and gases. The black hot-air tubes retain their shape across the entire temperature range from –200 °C to +240 °C. Hot-air tubes made of flame-retardant, highly resistant modified fluoralkoxy are resistant to UV radiation and classified in fire class UL 94 V0.
Exhaust hoses made of PFA: Flexible connections up to +250 °C
The translucent to clear hot-air tubes made of perfluoroalkoxy are used in explosion-protected areas (Ex protection), for transferring liquids and gases, for conveying solvents and alcohol, and to compensate for thermally induced longitudinal expansion. They are also used as flexible connection tubes on movable apparatus in laboratories, research and industrial operations. PFA corrugated tubes cover a temperature range from –200 °C to +250 °C. The absolutely non-porous tubing is temperature-, weather- and ozone-resistant as well as resistant to all corrosive substances and solvents. Particularly noteworthy are the extremely small bending radii of 15 to 35 mm (depending on hose dimension).
PFA corrugated tubes with smooth ends are equipped with cylindrical end pieces for adaptation to tube & hose connectors.
Hot-air hoses made of PTFE: Highly resistant up to +260 °C
Polytetrafluoroethylene (PTFE) is a fluoropolymer with outstanding resistance to acids, alkalis, solvents and gases. Depending on mechanical and chemical stress, the material is thermally resistant up to +260 °C.
PTFE products are widely used in:
• the pharmaceutical industry as pharmaceutical hoses
• medical technology as medical hoses
• the food industry as food-grade hoses
• process engineering as chemical hoses
• semiconductor technology
• biotechnology
• microelectronics
PTFE corrugated tubes are resistant to almost all inorganic and organic media and gases. At the same time, the hot-air tubing is non-toxic, free of any extractable components, physiologically safe and comply with FDA and BfR standards. Their operating temperature ranges from –65 °C to +260 °C. Depending on the desired hose dimensions, minimum bending radii from 16 mm to 83 mm are possible.
PTFE corrugated tubes with smooth ends feature cylindrical fittings that allow connection with THOMAFLUID pipe connectors. Their operating temperature range is –70 °C to +260 °C – briefly even up to +280 °C – and they can be sterilized with hot air at +134 °C. Another advantage is their particularly high gas tightness.
With a special fluoropolymer compound developed against electrostatics for semiconductor technology, PTFE Antista corrugated tubes can be manufactured. Their formulation with 25% carbon powder (alloyed) ensures a discharge resistance of <10⁶ ohms. This hot-air tubing is suitable for operating temperatures between –200 °C and +260 °C. The minimum bending radius is between 38 mm and 134 mm, depending on hose dimensions.
Warm-air hoses made of PVDF: Highly durable up to +150 °C
For the protection of lines in stationary installation – particularly under unfavorable environmental conditions – highly resilient materials are required. With flexible yet mechanically robust PVDF corrugated tubes, aggressive yet sensitive liquid and gaseous media can be conveyed, even on moving and vibrating equipment. Therefore, polyvinylidene fluoride hoses are preferred as warm-air hoses in the temperature range from –60 °C to +150 °C, especially in:
• mechanical engineering
• apparatus engineering and process technology
• electronics
• semiconductor manufacturing
• environmental research
• environmental analytics
• biotechnology
• nuclear technology and radiochemistry
Hot-air products made of highly resistant PVDF are flame-retardant (fire class UL 94 V0), extremely strong and abrasion-resistant. They show the highest chemical resistance to almost all aggressive media such as halogens, ozone, strong acids and alkalis or solvents like aromatic hydrocarbons. The flexible warm-air hoses are biocompatible, free of extractable components and sterilizable at +121 °C.
Ventilation tubing made of EPDM/PP: Constantly resistant up to +125 °C
Durable ventilation tubing conducts and conveys aggressive chemical vapors, hot air, smoke and gas in the temperature range from –40 °C to +125 °C – while it can also briefly withstand temperatures up to +150 °C. It is also suitable for engine ventilation. The warm-air hoses are made of the thermoplastic elastomer EPDM/PP (THOMAPREN, Santoprene®), which shows high resistance to inorganic and organic media. The exhaust hoses contain an embedded steel wire spiral as a pressure carrier. The flexible ventilation hoses are available with inside diameters from 50 mm to 152 mm.
How does the temperature resistance arise?
The temperature resistance of the materials described is based on their molecular structure. In fluoropolymers (PTFE, PFA, FEP, MFA), the strong carbon-fluorine bonds ensure exceptional thermal stability. Silicones owe their heat resistance to the flexible silicon-oxygen backbone of their polymer chains and the crosslinking of the molecules. PVDF achieves its thermal resistance through partial fluorination, while EPDM/PP is thermally resilient due to its crosslinked structure and the combination of saturated polymer chains.
The highest temperature resistance is shown by silicone hoses at up to +310 °C, followed by PTFE at +260 °C (briefly +280 °C), PFA at +250 °C and MFA at +240 °C. FEP is resistant up to +200 °C, PVDF up to +150 °C and EPDM/PP up to +125 °C (briefly +150 °C). Also remarkable is the low-temperature resistance: many fluoropolymers can be used down to –200 °C or even –270 °C, silicone down to –85 °C, PVDF down to –60 °C and EPDM/PP down to –40 °C.
Buy high-performance hot-air products from rct-online.de/en
Order hot-air hoses, silicone hoses, corrugated tubes, suction hoses and vacuum hoses quickly and easily in our online shop. All hot-air products are shipped immediately from stock, even in small quantities without minimum order surcharges. The hoses are also available in short lengths.
If you have any questions, please call us at +49 (0)6221-31250 or contact us by e-mail. Our hose specialists will be happy to advise you. Together we will find the right hose for your systems and machinery. Further chemical and technical information on the thermoplastics offered can be found in our electronic resistance list and our extensive glossary.
