Sealing technology manual for the process industry - ePTFE

Products • FG-360 Joint Sealant is a sealant tape with adhesive strips on the back for ease of installation. It is an excellent prod- uct for heat exchangers, irregular flanges, fuel caps, man- holes and hand holes • FG-360 Seal Plates are produced in 1.5 mm, 2 mm and 3 mm plate thickness. The panel size is 1,500 mm x 1,500 mm. Other thicknesses are also available on request • FG-360 Packing Cord is a round cord pack that does not harden in use. It is suitable for almost all conceivable ap- plications. The low friction coefficients ensure the valve function even after a long period of inactivity. Packing cords are available as standard sizes with a diameter of 2 mm to 25 mm ePTFE is an expanded PTFE material with improved me- chanical properties as a result of the multi-directional alignment of the polymer chains. Freudenberg’s FG-360 has a denser form and therefore of- fers better stability and even less creep relaxation and cold flow than existing expanded PTFE products. This eliminates the need for a reinforcing effect by means of fillers and binding agents. FG-360 is thus a 100% pure ePTFE - without additives. Because of its purity, the material can be used in the bio- technology and pharmaceutical industry without concerns. Damaged or worn flange surfaces are easily offset by this material. It is a soft, extremely compressible and at the same time very strong material that has excellent sealing proper- ties even at low surface pressures and tightening torques. Due to the impermeability effect at low surface pressures, it is ideally suited for plastic and glass-lined flanges. Its low friction coefficient of 0.2 (similar to wet ice) allows easy in- stallation and dismantling. ePTFE has an unlimited shelf life because it does not embrittle or age. This material is resist- ant to UV radiation, ozone and almost all chemicals. It is very easy to cut or punch by hand. General properties • Well-suited for applications in the temperature range from –200 °C to +300 °C (–328 °F to +572 °F) • Usable in the pressure range from vacuum to 200 bar • Chemically inert over the pH range from 0 to 14 • FDA-compliant • USP Ch. 88 Class VI–121°C (250 °F) ePTFE PROPERTIES 1.5 MM THICK 3.0 MM THICK Type TF-0-0 DIN 28091-3 TF-0-0 DIN 28091-3 Color white white Rules and standards • FDA 21 CFR 177.1550 • USP Ch. 88 (in vivo), Class VI – 121 °C (250 °F) • TA Luft • FDA 21 CFR 177.1550 • USP Ch. 88 (in vivo), Class VI – 121 °C (250 °F) • TA Luft Density g/cm3 0.85 0.85 Tensile strength longitudi- nally N/mm2 14 18 Compression % 69 66.2 Resilience % 7.6 11.6 Temperature range –268 to +315 °C (–450 to +599 °F) –268 to +315 °C (–450 to +599 °F) APPENDIX PRODUCT PORTFOLIO MATERIALS RESISTANCE & PURITY ENGINEERING PLASTICS ELASTOMERIC MATERIALS TECHNICAL FUNDAMENTALS INTRODUCTION 51 0.850.85 1418 Compression % 6966.2 Resilience % 7.611.6

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