Two-way back flow PTFE lip oil seal

The utility model relates to a sealing part, in particular to a two-way back flow PTFE (polytetrafluoroethylene) lip oil seal, which comprises a skeleton, a sealing body, a spring and a PTFE sheet stuck on the lip, and is characterized in that a two-way back flow line is arranged on one side of the...

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Bibliographische Detailangaben
1. Verfasser:	GAI MINLING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING CYLINDERS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING PISTONS SEALINGS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The utility model relates to a sealing part, in particular to a two-way back flow PTFE (polytetrafluoroethylene) lip oil seal, which comprises a skeleton, a sealing body, a spring and a PTFE sheet stuck on the lip, and is characterized in that a two-way back flow line is arranged on one side of the lip of the PTFE sheet and adopts a gradation structure that the height to the lip direction decreases, and the two-way back flow line adopts a single strip or multi-strip saw-toothed or wavy mould pressing forming structure. The two-way back flow PTFE lip oil seal provided by the utility model overcomes the common defects of the original PTFE lip oil seal of no back flow effect and high probability oil leakage, the sealing fails; and the utility model has the advantages that the two-way back flow PTFE lip oil seal can keep various good properties of the PTFE lip, have two-way back flow effect, also can keep good sealing effect, and be suitable for two-way running operating mode, thereby enlarging the application fi