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Creep-gasket

Fluorocarbons (PTFE, FEP, PVF2) Powder, emulsions Excellent high temperature properties. TFE to 500 F. FEP is easier to mold, but maximum use temperature is 400 F. Nearly inert chemically. Nonflammable. Loading with conductive filler improves creep resistance. Low coefficient of friction. High-temperature cable shielding, gaskets, heat-shrinkable tubing. [Pg.390]

ASTM F1276, 1999 (2003). Creep relaxation of laminated composite gasket materials. [Pg.217]

The recently developed modified PTFE (e.g., Teflon NXT), because of its improved processing, lower creep, improved permeation, less porosity and better insulation than standard PTFE, finds use in pipe and vessel linings, gaskets and seals, fluid-handling components, wafer processing, and electric and electronic industries. An example of a molded part from modified PTFE is shown in Figure 4.15. [Pg.74]

Modifed PTFE can be used in practically all applications, where the conventional polymer is used. In addition to that, new applications are possible because of its improved flow and overall performance. In the chemical process industry, it is used for equipment linings, seals, gaskets, and other parts, where its improved resistance to creep is an asset. In semiconductor manufacturing, modified PTFE is used in fluid handling components and in wafer processing components. Typical applications in electrical and electronic industries are connectors and capacitor films. Other applications are in unlubricated bearings, laboratory equipment, seal rings for hydraulic systems, and antistick components.103... [Pg.159]

Indentation hardness by Barcol hardness tester for rigid plastics Creep relaxation of gasket materials... [Pg.305]

Under a sustained load, PTFE will creep (exhibit cold flow), which imposes limitations on PTFE in such applications as gasket material between bolted flange faces... [Pg.37]

Encapsulation - This term means to enclose as in a capsule. Polytetrafluoroethylene (PTFE) can be used to encapsulate metal articles to impart chemical resistance to them. Examples include encapsulated metal gaskets and butterfly valve gates. The metal provides mechanical strength and resistance to creep. [Pg.527]

Shear Adhesion—(Also called creep resistance) The force required to pull a gasket from a standard surface in a direction parallel to that surface. [Pg.81]

In batteries with metallic container one terminal must be electrically insulated from it. In low-temperature batteries for this purpose rubber or plastic gaskets are used, which provide a sufficient effective sealing of joints. But in sealed batteries with an alkaline electrolyte solution (e.g., in cylindrical alkaline manganese-zinc batteries), after some time the alkaline solution begins to creep around most sealing gaskets and then forms on the outside white patches of alkali carbonates. [Pg.47]

As a material. Teflon is not strong, tending to creep readily under stress. Its extreme inertness makes bonding to any surface difficult. This compound is used, typically, for linings, gasket material, and diaphragm valves. [Pg.300]

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See also in sourсe #XX -- [ Pg.360 ]



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