PTFE Gaskets - DONIT TESNIT, d.o.o. - #1

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Untitled table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:5.00pt "Arial", sans-serif; } .font1 { font:6.00pt "Arial", sans-serif; } .font2 { font:9.00pt "Arial", sans-serif; } .font3 { font:10.00pt "Arial", sans-serif; } .font4 { font:11.00pt "Arial", sans-serif; } .font5 { font:12.00pt "Arial", sans-serif; } TIO TÏ4 PROPERTIES AND APPLICATION PTFE gaskets are one of the most suitable types of gaskets for a variety o Isealing applications and are mostly based on virgin PTFE or fi lied PTFE. And Iwhat provides the PTFE gaskets with such an extensive range of |applicability? Theanswer is PTFE. PTFE is a fluoropolymer, which features an .outstanding chemical resistivity to almost ail chemicals, good therma insulation properties, and useful mechanical and processing characteristics. The above-mentioned PTFE features can be usefully applied in PTFE gaskets. They can be mostly used in valve seats, bearings, requested to resin sliding and chemicals, elastic band for un-lubricated compressors, O-rings where elastomers can notwithstand. An extended range of improved mechanical and processing properties can be additionally reached by combination of virgin PTFE and different fillers. Different combination offer a variety of different properties describet in the following table. Filler Improved properties Glass * enhanced wear résistance * chemical resistance Graphite * extremely low coefficient of friction * fairly good compressive strength * good wear resistance Carbon * good thermal resstance * resistance to deformation Bronze * enhanced compressive strength * good wear resistance * high thermal conductivity T16 Expanded PTFE Gaskets and Seal materials consist of virginal PTFE withmultidirectional fibrous and/or porous structure, which the extruded PTFE consists of. A special manufacturing process provides the material with special chemical and physical properties. This can be of advantage in wide range of the applications. ADVANTAGES Virgin PTFE, PTFE compounds and expanded PTFE offer a wide range of compounded products with good mechanical properties, electrical properties, thermal properties, chemical resistance, low friction coeficient and good resistance to wear. SHAPE AND CONSTRUCTION Several types of TESNILA PTFE gaskets are produced to meet the most demanding application. Materials DONIT TESNIT is using virgin PTFE powder and compounds for RAM extrusion and compression moulding delivered exclusively by recognised supplier. SIZE SIZE limitations: each peace can feature a maximum external diameter of uptolOOO mm. 24 STANDARDS FOR PTFE GASKETS USED WITH FLANGES Gasket Standard Flange Standard EN 1514-1 (former DIN 2690, DIN 2692, DIN 2693) PrEn 1092-1,-2,-3,-4 , EN 545, EN 598, EN 969 GASKET ORDERING EXAMPLE EN 1514-1 (formerDIN 269O), DN 65, PN 16, Form IBC virgin PTFE, 2 mm,