Gaskets from filled PTFE SPETOFLON®
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Applications:
chemical industry, petrochemical, food (including production of alcohol), pulp and paper, low and medium pressure pipeline joints, manufac-ture of vessels and reactors, tanks and containers; SPETOFLON® FL gaskets are designed for contact with chemically agressive media; also due to absolute physiological inertness; bacteria and fungi do not grow on SPETOFLON® FL material; in comparison with standard PTFE the ma-terials have significantly improved mechanical characteristics, particularly increased resistance to creep and strength.
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SPETOFLON® FL TF - gasket manufactured from virgin, sintered PTFE of 22,10 g/cm3 density, material physiologically harmless and chemically inert (with exception to elemental fluorine and molten alkalis); because of the cold flow, gasket should be selected for the joints with low <40N/mm2 compressive stress and medium service temperatures below 100°C, in tongue and groove flanges.
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SPETOFLON® FL gasket on the metal corrugated ring is used to improve recovery and conformability (especially in case of imperfections, misalignements and non-parallel flanges) for large dimensions flanges; in this case the mate-rial of the corrugated ring must be selected so that it is chemically resistant to the sealed medium.
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SPETOFLON® FL 240 is the top quality material based on PTFE. The highest known today resistance to creep, high permissible assembly loads, tightness , resistance to chemical attack even by the most agressive media, such as mo-nomers; SPETOFLON® FL 240 is manufactured in the unique proprietary process assuring almost ideal homoge-neity of the sheet and its smoothness, it allows for relatively low compressive loads (in spite of relatively small com-pressibility); due to high tensile strength can be applied in the joints (e.g. plugs) where the installation involves tur-ning of the joint parts, not recommended for concentrated hydroxides, elemental fluorine, hydrogen sulphite, fluoro-hydrogen acid and fluorosilicic acid.
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SPETOFLON® FL 200 is a high quality material of medium compressibility and very good strength and sealability characteristics; applied in vessels and pipelines. SPETOFLON® FL 200 is most frequently applied in installation with hot sodium hydroxide and potassium hydroxide, solutions used for galvanization of chromium, cooling liquids, etc. Specially selected filler with PTFE creates homogenous material which gives gaskets specific mechanical and chemi-cal properties, material hardens in contact with the medium; easy to cut and form.
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SPETOFLON® FL 160 – glass filled PTFE, very economical material, designed for the applications with industrial me-dia except for elemental fluorine, concentrated potassium and sodium hydroxide, amonia hydroxide, sodium silica-te, fluorosilicic acid, chromic acid, hydrogen cyanide, fluorohydrogen acid and in case of very high sealability requ-irements. |
Custom styles:
- full face gaskets with bolt holes
- gasket other than round
- gaskets with additional sealing strip from ePTFE
- shaped gaskets from PTFE of various cross sections applied in e.g. glass pipelines in the laboratories etc.
Availability:
Gaskets delivered according to the following norms:
- DIN 2690÷2692,
- ASME B16.5,
- ASME B16.21,
- ASME B16.47,
- ISO 7483,
- EN 1514-1,
- EN 12560-1