Sealing material


PURPOSE: To seal liquid or gaseous chemicals by covering an elastic layer with a chemicals-resisting layer together with covering the chemicals-resisting layer with a fine-fiber-structured porous layer made of tetra-fluoroethylene resin. CONSTITUTION: The sealing material is made up of a three-layered structure: an elastic body layer 1, a core part 1, a plastic layer 2, an intermediate layer, and a PTFE-made porous layer 3, the outer most layer. It is most appropriate to form the elastic layer 1 by using rubber material such as nitrile rubber, natural rubber, or silicone rubber. The plastic layer 2, which covers the elastic body 1, is formed by means of PE, PP, FEP, etc. In addition, the outermost PTFE-made porous layer 3 is made up of fine-fiber-structure formed by nodes, which are connected with each other by fibers. The mean diameter and porosity of the porous layer 3 is set at 0.1W10μm and 30W95%, respectively. COPYRIGHT: (C)1987,JPO&Japio




Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)


Cited By (9)

    Publication numberPublication dateAssigneeTitle
    CN-103602311-AFebruary 26, 2014马士民一种可再循环使用的柔性纳米密封填料
    FR-2764032-A1December 04, 1998CafacJoint elastomere renforce par des charges de noir de carbone et recouvert d'un revetement de protection
    JP-2013224389-AOctober 31, 2013Japan Matekkusu Kk, ジャパンマテックス株式会社パッキン材料及びこの材料を用いたグランドパッキン
    JP-H02300568-ADecember 12, 1990Japan Gore Tex IncNon-dust generating gasket
    JP-H0339662-UApril 17, 1991
    US-2017191565-A1July 06, 2017Onesubsea Ip Uk LimitedMulti-material seal having a seal body and core
    US-8196523-B2June 12, 2012Parker-Hannifin CorporationRailroad tanker car manway cover seal
    US-8397646-B2March 19, 2013Parker-Hannifin Corp.Railroad tanker car manway cover seal
    US-9863536-B2January 09, 2018Onesubsea Ip Uk LimitedMulti-material seal having a seal body and core