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- 2016-06-01 17:24:51
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??Tetrafluoroethylene-coated rubber O-ring
??Tetrafluoroethylene-coated rubber O-ring seal and rubber elasticity and chemical resistance of PTFE combine organic, it is composed of a silicone or fluorine-colored plastic inner core and relatively thin FEP or PFA overcoat combination into, PTFE-coated rubber O-ring seal with excellent performance. Rubber O-ring wear resistance, chemical resistance and anti-poor gas permeability, pure PTFE O-ring hardness higher resistant to compression but less flexible. Covered with FEP / PFA rubber O-ring has a good antiswelling properties and chemical stability (unless by alkali metals, fluorine and some of the halide erosion at high temperatures) in the vicinity of the rubber Oring has good elasticity, FEP / PFA friction coefficient is very small (only 0.1 to 0.2), but also has excellent resistance to gas permeability, these properties make tetrafluoroethylene coated rubber O-ring can really use in harsh environments.
??Features:
??- Outstanding chemical resistance, suitable for almost all chemical media (strong oxidation, reduction solvent).
??- Excellent corrosion resistance (acid, alkali solvent).
??- Wide temperature range -200 ? ~ 260 ?
??- Good compression resistance ≥30%
??- Anti-friction (friction coefficient is very small only 0.1 to 0.2).
??- Good anti-swelling properties (≤0.1%).
??- High pressure (up to 60Mpa).
??- Excellent sealing durability, increased 500% life.
??Seamless surface and a dense, homogeneous FEP / combined with external cladding and rubber inner core makes PFA tetrafluoroethylene-coated O-ring seal overall consistency, flexibility and compression ring on each point evenly, after sustained pressure still under the effect of repeated installation. With increasing media pressure, the seal is compressed as a whole. Tetrafluoroethylene-coated O-ring as a high-viscosity liquids, which will act to reduce the pressure on land without passing out in all directions.
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