GB821714A - Improved sealing element for use between relatively rotating members and method of making such element - Google Patents

Improved sealing element for use between relatively rotating members and method of making such element

Info

Publication number
GB821714A
GB821714A GB31895/56A GB3189556A GB821714A GB 821714 A GB821714 A GB 821714A GB 31895/56 A GB31895/56 A GB 31895/56A GB 3189556 A GB3189556 A GB 3189556A GB 821714 A GB821714 A GB 821714A
Authority
GB
United Kingdom
Prior art keywords
sealing
blank
sealing element
making
bellows
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.)
Expired
Application number
GB31895/56A
Inventor
Samuel Clifford Walt Wilkinson
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.)
Crane Packing Ltd
Original Assignee
Crane Packing Ltd
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 Crane Packing Ltd filed Critical Crane Packing Ltd
Priority to GB31895/56A priority Critical patent/GB821714A/en
Priority to FR1184227D priority patent/FR1184227A/en
Publication of GB821714A publication Critical patent/GB821714A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/36—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member connected by a diaphragm or bellow to the other member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Sealing (AREA)
  • Sealing Devices (AREA)

Abstract

821,714. Stuffing-box substitutes. CRANE PACKING Ltd. Oct. 3, 1957 [Oct. 19, 1956], No. 31895/56. Class 122 (5). [Also in Group V] A method of making an axially-compressible sealing element for use between relatively rotatable parts 4, 7, Fig. 1, comprises moulding a tubular blank A, Fig. 2, of synthetic plastic or other suitable plastic material having a wear-resistant end surface 1 adjoining a portion of resilient material, and mechanically working the latter portion to form a bellows 2. The blank A may be, as shown in Fig. 2, produced by a moulding process in which a portion B of a mixture of polytetrafluoroethylene and a reinforcing material, such as glass, metal powder or porous carbon, is first inserted into the mould, followed by a portion C of pure polytetrafluoroethylene and finally by a further portion D of the former reinforced mixture. The sandwich material is then moulded and sintered and the blank is finally machined to form the bellows 2, the sealing surface 1A and a groove 3A. In the sealing application, as shown in Fig. 1, the finished element is clamped to the shaft 4 by a ring 5 engaging in the groove 3A and the sealing surface 1A is urged into contact with a seating ring 6 mounted in a stuffing box 7 by a spring 8 enclosed in a protective sheath 9. Alternatively, the sealing element may be stationary and make sealing contact with a member fixed to the shaft.
GB31895/56A 1956-10-19 1956-10-19 Improved sealing element for use between relatively rotating members and method of making such element Expired GB821714A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB31895/56A GB821714A (en) 1956-10-19 1956-10-19 Improved sealing element for use between relatively rotating members and method of making such element
FR1184227D FR1184227A (en) 1956-10-19 1957-10-11 Method of manufacturing an axially compressible seal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB31895/56A GB821714A (en) 1956-10-19 1956-10-19 Improved sealing element for use between relatively rotating members and method of making such element
GB1184227X 1956-10-19

Publications (1)

Publication Number Publication Date
GB821714A true GB821714A (en) 1959-10-14

Family

ID=29217394

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31895/56A Expired GB821714A (en) 1956-10-19 1956-10-19 Improved sealing element for use between relatively rotating members and method of making such element

Country Status (2)

Country Link
FR (1) FR1184227A (en)
GB (1) GB821714A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340121A (en) * 1992-10-15 1994-08-23 Furon Company Face seal with integral fluorocarbon polymer bellows
WO2014085026A1 (en) * 2012-11-28 2014-06-05 Ge Oil & Gas Esp, Inc. Mechanical seal with pfa bellows

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340121A (en) * 1992-10-15 1994-08-23 Furon Company Face seal with integral fluorocarbon polymer bellows
WO2014085026A1 (en) * 2012-11-28 2014-06-05 Ge Oil & Gas Esp, Inc. Mechanical seal with pfa bellows
US8925928B2 (en) 2012-11-28 2015-01-06 Ge Oil & Gas Esp, Inc. Mechanical seal with PFA bellows

Also Published As

Publication number Publication date
FR1184227A (en) 1959-07-17

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