Our materials

PTFE and PCTFE can be used as solid lubricant in cryogenics

Thanks to the particularly exceptional properties of polymers, they are often used as solid lubricants in the field of tribology, especially in cryogenic environments. At atmospheric pressure, cryogenic fluids have very low viscosities. For liquid oxygen, the viscosity is 0.20-10-3Pa-s and for liquid nitrogen it is 0.16-10-3Pa-s [25]. This makes...

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Wear resistance of metals and PCTFE at cryogenic temperature

In cryogenic environments, PTFE (polytetrafluoroethylene) and PCTFE (polychlorotrifluoroethylene) are the most commonly used fluoropolymers. Fluoropolymers are polymers where the atoms have been modified. Concretely, by substitution, fluorine atoms have taken the place of hydrogen atoms. This process of atom substitution has improved the chemical resistance and thermal resistance of...

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PPS polymers in electromechanical components

Due to their obvious properties, polymer materials called PPS or polyphenylene sulfides are frequently used in the manufacture of electromechanical components: contactors, switches, plugs, coils, relays or switches. But the applications are obviously numerous, as these materials have excellent mechanical and electrical resistance. PPS are available in many grades, but...

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The advantage of PCTFE in the use of gaskets for LNG (liquefied natural gas)

In terms of cryogenic sealing, two main polymers used on the market are : PCTFE or PTFCE - polychlorotrifluoroethylene - and PTFE - polytetrafluoroethylene - and more specifically MPTFE, i.e. modified PTFE (TFM® or NXT®). These polymers are very much in demand, particularly in cryogenic sealing systems, thanks to their...

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Ebauche PCTFE

PCTFE molding

Information on the PCTFE molding at SPN SPN performs PCTFE molding operations for the production of blanks, semi-products (plates, tubes, bars) and specific designs transmitted by our customers (direct forming). The compression moulding process is as follows: the material is inserted into a mould and then placed in an oven...

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Composent PAI

PAI (Polyamide-Imide)

PAI (Polyamide-Imide) PAI or polyamide-imide is one of the most resistant polymers on the market today. It draws its notoriety from its resistance. Without additives, polyamide-imide has the ability to withstand extreme temperatures. This material remains unchanged even when exposed to a temperature of 270°C. Polyamide-imide or PAI is also very...

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PCTFE PTFCE

Plastic PCTFE

PCTFE (polychlorotrifluoroethylene) Key features of PCTFE: Resistant to cryogenic temperatures Almost perfect waterproofing Good chemical stability PCTFE or PTFCE is a fluoropolymer highly appreciated for its properties of very low gas permeability, chemical stability and low-temperature resistance. It is therefore a material of choice in industrial sectors such as aeronautics, cryogenics, and valve equipment...

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PTFE naturel ou chargé

Polytetrafluoroethylene PTFE

PTFE PTFE (polytetrafluoroethylene) is a fluoropolymer with remarkable properties, often referred to by the name Teflon (Chemour brand). We at SPN, formerly Ulmer Aéronautique, were the first French company to process PTFE for the production of masks for fighter pilots. Since then, we have continued to develop our know-how in...

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