GB1157620A - Seal. - Google Patents

Seal.

Info

Publication number
GB1157620A
GB1157620A GB5187065A GB5187065A GB1157620A GB 1157620 A GB1157620 A GB 1157620A GB 5187065 A GB5187065 A GB 5187065A GB 5187065 A GB5187065 A GB 5187065A GB 1157620 A GB1157620 A GB 1157620A
Authority
GB
United Kingdom
Prior art keywords
sealing portion
annular sealing
expanded
rubber tube
contact
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
GB5187065A
Inventor
N Payne
D D J Nightingale
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to DE19661775954 priority Critical patent/DE1775954A1/en
Priority to DE19661525683 priority patent/DE1525683C3/en
Priority to SE1479266A priority patent/SE343934B/xx
Priority to SE1453070A priority patent/SE375592B/xx
Priority to FR82076A priority patent/FR1502992A/en
Priority to BE726569D priority patent/BE726569A/xx
Priority to JP2731369A priority patent/JPS4820494B1/ja
Publication of GB1157620A publication Critical patent/GB1157620A/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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing
    • 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
    • F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
    • F16J15/184—Tightening mechanisms

Landscapes

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

Abstract

1,157,620. Seals; pistons; valves. IMPERIAL CHEMICAL INDUSTRIES Ltd. 11 Oct., 1966 [28 Oct., 1965; 7 Dec., 1965], Nos. 45785/65 and 51870/65. Headings F2B, F2T and F2V. A seal comprises an inner element having a deformable annular sealing portion which is distended radially outwards to contact the walls of a surrounding vessel, the surface of the annular sealing portion being continuous with the rest of the surface of the inner element which is exposed to the fluid or vacuum to be sealed and made from a fluorine-containing polymer such as P.T.F.E., polychlorotrifluoroethylene, polyvinyl fluoride, polyvinylidene fluoride and copolymers of P.T.F.E. containing ethylene or hexafluoropropene. An annular sealing portion 10, Fig. 5, of a piston or valve spindle is expanded into sealing contact by a rubber tube 11 compressed by a nut 12 and spring 13. In another embodiment, Fig. 6, the annular sealing portion 34 of a valve spindle or free piston is expanded by fluid which is contained within a chamber 33 and pressurized by a rod screwed into a bore 32 of a metal or plastics core 31. A valve, Figs. 1, 2 and 10 (not shown), consists of a glass body and a P.T.F.E. spindle which is expanded into sealing contact with the body by axially compressing a rubber tube (1), Figs. 3 or 4 (not shown). The invention may also be applied to a rotary drive-shaft, Fig. 9 (not shown), which extends into a vessel containing toxic, corrosive or radio-active materials, an annular sealing portion being expanded into sealing contact by a rubber tube (21) compressed by a nut (22). If desired, the deformable annular sealing portion may be made of metal coated with the fluorine-containing polymer.
GB5187065A 1965-10-28 1965-10-28 Seal. Expired GB1157620A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE19661775954 DE1775954A1 (en) 1965-10-28 1966-10-20 SEAL BETWEEN AN OUTER HOLLOW BODY AND AN INNER ORGAN
DE19661525683 DE1525683C3 (en) 1965-10-28 1966-10-20 Spindle seal for a corner valve
SE1479266A SE343934B (en) 1965-10-28 1966-10-27
SE1453070A SE375592B (en) 1965-10-28 1966-10-27
FR82076A FR1502992A (en) 1965-10-28 1966-10-28 Tight seal of a valve gland
BE726569D BE726569A (en) 1965-10-28 1969-01-07
JP2731369A JPS4820494B1 (en) 1965-10-28 1969-04-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4578565 1965-10-28

Publications (1)

Publication Number Publication Date
GB1157620A true GB1157620A (en) 1969-07-09

Family

ID=10438593

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5187065A Expired GB1157620A (en) 1965-10-28 1965-10-28 Seal.

Country Status (1)

Country Link
GB (1) GB1157620A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2432028A1 (en) * 1973-07-03 1975-01-23 Ici Ltd TAP
US4697447A (en) * 1985-01-22 1987-10-06 National Research Development Corporation Plug drawing of tubes and other hollow items

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2432028A1 (en) * 1973-07-03 1975-01-23 Ici Ltd TAP
US4697447A (en) * 1985-01-22 1987-10-06 National Research Development Corporation Plug drawing of tubes and other hollow items

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)