CA2058256A1 - Graphite packing - Google Patents

Graphite packing

Info

Publication number
CA2058256A1
CA2058256A1 CA 2058256 CA2058256A CA2058256A1 CA 2058256 A1 CA2058256 A1 CA 2058256A1 CA 2058256 CA2058256 CA 2058256 CA 2058256 A CA2058256 A CA 2058256A CA 2058256 A1 CA2058256 A1 CA 2058256A1
Authority
CA
Canada
Prior art keywords
rings
packing
ptfe
graphite
graphite packing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2058256
Other languages
French (fr)
Other versions
CA2058256C (en
Inventor
Ronald Ray Brestel
Ronnald James Funk
Wilbur Dean Hutchens
Frank Eric Jensen
Virgil Wayne Pepper
William Charles Scheffert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fisher Controls International LLC
Original Assignee
Fisher Controls International LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fisher Controls International LLC filed Critical Fisher Controls International LLC
Publication of CA2058256A1 publication Critical patent/CA2058256A1/en
Application granted granted Critical
Publication of CA2058256C publication Critical patent/CA2058256C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Sealing Devices (AREA)
  • Details Of Valves (AREA)
  • Lift Valve (AREA)

Abstract

A fluid valve graphite packing assembly with graphite packing rings and thin PTFE disc rings sur-rounding an operating valve member. Softer graphite packing rings on the interior are bounded by progressively harder graphite packing rings. A PTFE
disc ring is inserted between the graphite packing rings. The packing is subjected to sufficient packing stress to cause the PTFE disc rings to extrude onto the operating valve member. A laminated packing ring formed of alternating sheets of flexible graphite and PTFE which is die cut to provide a crown shaped cross-section aiding in enabling PTFE extrusion to enhance valve operating member lubrication and sealing.
CA002058256A 1991-11-13 1991-12-20 Graphite packing Expired - Lifetime CA2058256C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US79143191A 1991-11-13 1991-11-13
US07/791,431 1991-11-13

Publications (2)

Publication Number Publication Date
CA2058256A1 true CA2058256A1 (en) 1993-05-14
CA2058256C CA2058256C (en) 2002-02-26

Family

ID=25153707

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002058256A Expired - Lifetime CA2058256C (en) 1991-11-13 1991-12-20 Graphite packing

Country Status (1)

Country Link
CA (1) CA2058256C (en)

Also Published As

Publication number Publication date
CA2058256C (en) 2002-02-26

Similar Documents

Publication Publication Date Title
US4720113A (en) Multilayer, multihardness seal
US3469854A (en) Header ring
US4821627A (en) Piston and cylinder assembly
SE8503461L (en) PROFILED AXEL SEAL FOR HIGH PRESSURE APPLICATIONS
AU4367097A (en) Pressure responsive primary ring geometry for a non- contacting mechanical end face seal
ES2189882T3 (en) TURBINE BOARD.
AU568639B2 (en) Oil lip seal with combination wear sleeve and excluder lip
AU3381997A (en) Modular seal assembly for a wall opening
GB1578226A (en) Composite packing
CA2082093A1 (en) Connector with captive sealing ring
CA2035772A1 (en) Mechanical seal
AU4994590A (en) Seals
CA2116129A1 (en) Improvements in and relating to gaskets
CA2282814A1 (en) Tubing connector
US2310405A (en) Oil seal
EP1266158B1 (en) High pressure seal
EP0264179A3 (en) Improvements relating to rotary ball valves and ball joints
US3770285A (en) Ring seal
AU6218480A (en) Cryogenic valve seal
SE8401816D0 (en) REVERSE LIP POSITIVE WAITING SEAL
SE8402189L (en) PROPELLER SHAFT SEALING SEAL
CA2058256A1 (en) Graphite packing
CA2027373A1 (en) Stuffing box assembly
AU633993B2 (en) Annular sealing apparatus
SE8502059D0 (en) PISTON CYLINDER DEVICE

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry
MKEX Expiry

Effective date: 20111220