US3878031A - Packing for movable machine parts - Google Patents
Packing for movable machine parts Download PDFInfo
- Publication number
- US3878031A US3878031A US406132A US40613273A US3878031A US 3878031 A US3878031 A US 3878031A US 406132 A US406132 A US 406132A US 40613273 A US40613273 A US 40613273A US 3878031 A US3878031 A US 3878031A
- Authority
- US
- United States
- Prior art keywords
- weight
- core
- packing
- polytetrafluoroethylene
- graphite
- 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 - Lifetime
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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
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/20—Packing materials therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2915—Rod, strand, filament or fiber including textile, cloth or fabric
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2933—Coated or with bond, impregnation or core
- Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
- Y10T428/296—Rubber, cellulosic or silicic material in coating
Definitions
- the invention relates to a packing to be arranged between movable machine parts. in particular for pumps. compressors or the like.
- Object of the invention is to provide an improved packing which has a long life under extreme conditions too.
- the packing of the invention comprises a core which contains a mixture of polytetrafluoroethylene and at least one element selected from the group consisting of silicone oil, graphite and molybdenum, and a coating of fibrous material surrounding said core.
- the packing of the invention has a core which contains 60 to 80 7r by weight of polytetrafluoroethylene, 4.25 to 13.75 71 by weight of silicone oil, to 7: by weight of graphite. and 0.75 to 1.25 7! by weight of molybdenum disulfide.
- the coating of fibrous material may be a. porous web or a porous tubular knitting.
- FIG. 1 is a top plan view of an embodiment ofa packing according to the invention.
- FIG. 2 is a vertical cross section along the line 2-2 in FIG. 1.
- the packing comprises a core 1 and a coating 2.
- the core 1 consists of a mixture of polytetrafluoroethylene and at least one element selected from the group consisting of silicone oil. graphite and molybdenum disulfide.
- the porous coating 2 is of fibrous material such as, for instance, plastics, asbestos, vegetable or mineral fibres, in the form of a web or a tubular knitting.
- the core of the packing contains 60 7: by weight of polytetrafluoroethylene. 13.75 7: by weight of silicone oil, 25 7: by weight of graphite, and L25 7: by weight of molybdenum disulfide.
- the core of the packing contains a mixture of 80 7: by weight of polytetrafluoroethylene, 4.25 by weight of silicone oil, 15 7: by weight of graphite, and 0.75 7c by weight of molybdenum disulfide.
- the core of the packing contains a mixture of 79.5 7c by weight of polytetrafluoroethylene, 4.25 7: by weight of silicone oil. 15 7c by weight of graphite, and 1.25 7: by weight of molybdenum disulfide.
- the core of the packing contains 70 7: by weight of polytetrafluoroethylene, 9 7? by weight of silicone oil, 20 by weight of graphite and l 7: by weight of molybdenum disulfide.
- the core of the packing is produced by extruding.
- the core is produced as follows:
- a powder of polytetrafluoroethylene is mechanically mixed with an aqueous dispersion of polytetrafluoroethylene and subsequently stirred to form a viscous mass. Then graphite and/or asbestos powder or the like are added to that mass and the latter is worked by means of a kneader into a pasty consistency.
- a plastic in the form of granules of low friction coefficient is then charged into the kneader. whereupon the kneading process is continued until a homogeneous mass is formed.
- This mass is then charged into an extrusion press.
- the mass discharged from the extrusion press with the desired profile is then heated for a period of advantageously about one hour. ln this, the mass is heated to about 150C for about I hour and then air-dried.
- a practical feature consists in the fact that a 30 71 dispersion of polytetrafluoroethylene of low friction coefficient is used.
- the extruded material is rolled up and unrolled later for the application of the coating.
- the permeability of the coating must be adjusted to the viscosity of the core. as the latter is heated during operation. due to the friction of the respective machine parts.
- the adjustment can be effected by changing the mesh size of the web or knitted fabric.
- Polytetrafluoroethylene is a polymerization product of tetrafluoroethylene. Fluor polymers have specific properties as compared to other polymers. not only because their temperatures of use are higher, but also because they are either insoluble or virtually resistant to swelling by nearly all solvents and are not affected by any of the conventional chemicals. it is recognized in this that polytetrafluoroethylene is not a thermoplastic in the usual sense of the term. It is characterized, when cooled off slowly. by high compressive strength and low permeability to gas. At fast cooling. the mass is tough and flexible, which is of particular advantage for the present invention.
- the coating may be impregnated. as well. Suitable for this purpose is any given dispersion of plastics. for instance polytetrafluoroethylene.
- the improved packing according to the invention is permanently ductile; it is further chemically stable and application is possible for temperature ranges between 50C and 250C.
- a packing to be arranged between movable parts comprising a core which contains an homogenous mixture of polytetrafluoroethylene and at least one element selected from the group consisting of silicone oil. graphite and molybdenum disulfide forming a viscous mass. and a porous coating of fibrous material surrounding said core.
- a packing according to claim 1 wherein the core consists essentially of polytetrafluoroethylene and at least one element selected from the group consisting of silicone oil, graphite and molybdenum disulfide forming a viscous mass, and a porous coating of fibrous material surrounding said core.
- a packing according to claim 1 wherein said core contains 60 to 80% by weight of polytetrafluoroethylene, 4.25 to 13.75% by weight of silicone oil, 15 to 25% by weight of graphite and 0.75 to 1.25% by weight of molybdenum disulfide.
- porous coating is a porous web of fibrous material selected from the group consisting of vegetable fibres, mineral fibres, asbestos fibres and such plastic fibres which establish a permanent porous structure of the web.
- a packing according to claim 1 wherein said porous coating is a porous tubular knitting.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Lubricants (AREA)
Abstract
A packing to be arranged between movable machine parts, comprising a core which contains a mixture of polytetrafluoroethylene and at least one element selected from the group consisting of silicone oil, graphite and molybdenum, and a coating of fibrous material surrounding said core.
Description
United States Patent Dormer Apr. 15, 1975 [54] PACKING FOR MOVABLE MACHINE 2.578.523 12/1951 Llewellyn 277/227 X PARTS 2,691,814 10/1954 Tait 277/227 X 2,767,768 10/1956 Jelinck 277/228 X [76] Inventor: Frederic J. Dormer. 315 Central 3.534.652 10/1970 Zumeta et a1 277/230 x Park West, New York, NY. 10025 3,046,846 3/1972 Houghton et a1. 277/230 X 5 2 9 277 23 Flled: Oct 12,1973 3 7916 8 /l 74 Zumeta 0 [21] Appl. No.: 406,132 Primary ExaminerPhilip Dier Attorney, Agent, or Firm-Browne, Beveridge, 52 us. 01. 428/365; 87/1; 277/22s; Demand Klme 277/230; 428/373; 428/390 511 1m. (:1... B32b 15/04; F16j 15/00; B32b 27/06; [57] ABSTRACT 1332b 5/16; 365d 53/04 A packing to be arranged between movable machine [58] Field of Search 161/42, 189, 89, 162; parts, Comprising a core which n ains a mixture of 277/230 227423; 37/] polytetrafluoroethylene and at least one element selected from the group consisting of silicone oil, graph- [56] References Cited ite and molybdenum, and a coating of fibrous material Slll'I'OUfldlIlg said COI'C.
2,217,915 10 1940 Mehnert 161/42 6 Claims, 2 Drawing Figures PACKING FOR MOVABLE MACHINE PARTS The invention relates to a packing to be arranged between movable machine parts. in particular for pumps. compressors or the like.
ln general. the material for packings to be arranged in pumps or other machines which have rotating elements is rubber, plastics or metal. These packings of prior art are not sufficient for extreme conditions.
Object of the invention is to provide an improved packing which has a long life under extreme conditions too.
The packing of the invention comprises a core which contains a mixture of polytetrafluoroethylene and at least one element selected from the group consisting of silicone oil, graphite and molybdenum, and a coating of fibrous material surrounding said core.
Advantageously. the packing of the invention has a core which contains 60 to 80 7r by weight of polytetrafluoroethylene, 4.25 to 13.75 71 by weight of silicone oil, to 7: by weight of graphite. and 0.75 to 1.25 7! by weight of molybdenum disulfide.
The coating of fibrous material may be a. porous web or a porous tubular knitting.
These and other more detailed and specific objects will be disclosed in the course of the following specification. reference being made to the accompanying drawing. in which FIG. 1 is a top plan view of an embodiment ofa packing according to the invention. and
FIG. 2 is a vertical cross section along the line 2-2 in FIG. 1.
Referring to the drawing, it will be seen that the packing comprises a core 1 and a coating 2. The core 1 consists of a mixture of polytetrafluoroethylene and at least one element selected from the group consisting of silicone oil. graphite and molybdenum disulfide. The porous coating 2 is of fibrous material such as, for instance, plastics, asbestos, vegetable or mineral fibres, in the form of a web or a tubular knitting.
EXAMPLES l. The core of the packing contains 60 7: by weight of polytetrafluoroethylene. 13.75 7: by weight of silicone oil, 25 7: by weight of graphite, and L25 7: by weight of molybdenum disulfide.
2. The core of the packing contains a mixture of 80 7: by weight of polytetrafluoroethylene, 4.25 by weight of silicone oil, 15 7: by weight of graphite, and 0.75 7c by weight of molybdenum disulfide.
3. The core of the packing contains a mixture of 79.5 7c by weight of polytetrafluoroethylene, 4.25 7: by weight of silicone oil. 15 7c by weight of graphite, and 1.25 7: by weight of molybdenum disulfide.
4. The core of the packing contains 70 7: by weight of polytetrafluoroethylene, 9 7? by weight of silicone oil, 20 by weight of graphite and l 7: by weight of molybdenum disulfide.
The core of the packing is produced by extruding. The core is produced as follows:
A powder of polytetrafluoroethylene is mechanically mixed with an aqueous dispersion of polytetrafluoroethylene and subsequently stirred to form a viscous mass. Then graphite and/or asbestos powder or the like are added to that mass and the latter is worked by means of a kneader into a pasty consistency. A plastic in the form of granules of low friction coefficient is then charged into the kneader. whereupon the kneading process is continued until a homogeneous mass is formed. This mass is then charged into an extrusion press. According to the particularly preferred embodiment of the process, the mass discharged from the extrusion press with the desired profile is then heated for a period of advantageously about one hour. ln this, the mass is heated to about 150C for about I hour and then air-dried.
A practical feature consists in the fact that a 30 71 dispersion of polytetrafluoroethylene of low friction coefficient is used.
The extruded material is rolled up and unrolled later for the application of the coating. The permeability of the coating must be adjusted to the viscosity of the core. as the latter is heated during operation. due to the friction of the respective machine parts. The adjustment can be effected by changing the mesh size of the web or knitted fabric.
Polytetrafluoroethylene is a polymerization product of tetrafluoroethylene. Fluor polymers have specific properties as compared to other polymers. not only because their temperatures of use are higher, but also because they are either insoluble or virtually resistant to swelling by nearly all solvents and are not affected by any of the conventional chemicals. it is recognized in this that polytetrafluoroethylene is not a thermoplastic in the usual sense of the term. It is characterized, when cooled off slowly. by high compressive strength and low permeability to gas. At fast cooling. the mass is tough and flexible, which is of particular advantage for the present invention.
The coating may be impregnated. as well. Suitable for this purpose is any given dispersion of plastics. for instance polytetrafluoroethylene.
The improved packing according to the invention is permanently ductile; it is further chemically stable and application is possible for temperature ranges between 50C and 250C.
I claim:
1. A packing to be arranged between movable parts. comprising a core which contains an homogenous mixture of polytetrafluoroethylene and at least one element selected from the group consisting of silicone oil. graphite and molybdenum disulfide forming a viscous mass. and a porous coating of fibrous material surrounding said core.
2. A packing according to claim 1 wherein the coreconsists essentially of polytetrafluoroethylene and at least one element selected from the group consisting of silicone oil, graphite and molybdenum disulfide forming a viscous mass, and a porous coating of fibrous material surrounding said core.
3. A packing according to claim 1 wherein said core contains 60 to 80% by weight of polytetrafluoroethylene, 4.25 to 13.75% by weight of silicone oil, 15 to 25% by weight of graphite and 0.75 to 1.25% by weight of molybdenum disulfide.
4. A packing according to claim 1 wherein said core contains by weight of polytetrafluoroethylene, 9% by weight of silicone oil, 20% by weight of graphite and 1% by weight of molybdenum disulfide.
5. A packing according to claim 1 wherein said porous coating is a porous web of fibrous material selected from the group consisting of vegetable fibres, mineral fibres, asbestos fibres and such plastic fibres which establish a permanent porous structure of the web.
6. A packing according to claim 1 wherein said porous coating is a porous tubular knitting.
Claims (6)
1. A PACKING TO BE ARRANGED BETWEEN MOVABLE PARTS, COMPRISING A CORE WHICH CONTAINS AN HOMOGENOUS MIXTURE OF POLYTETRAFLUOROETHYLENE AND AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF SILICONE OIL, GRAPHITE AND MOLYBDENUM DISULFIDE FORMING A VISCOUS MASS, AND A POROUS COATING OF FIBROUS MATERIAL SURROUNDING SAID CORE.
2. A packing according to claim 1 wherein the core consists essentially of polytetrafluoroethylene and at least one element selected from the group consisting of silicone oil, graphite and molybdenum disulfide forming a viscous mass, and a porous coating of fibrous material surrounding said core.
3. A packing according to claim 1 wherein said core contains 60 to 80% by weight of polytetrafluoroethylene, 4.25 to 13.75% by weight of silicone oil, 15 to 25% by weight of graphite and 0.75 to 1.25% by weight of molybdenum disulfide.
4. A packing according to claim 1 wherein said core contains 70% by weight of polytetrafluoroethylene, 9% by weight of silicone oil, 20% by weight of graphite and 1% by weight of molybdenum disulfide.
5. A packing according to claim 1 wherein said porous coating is a porous web of fibrous material selected from the group consisting of vegetable fibres, mineral fibres, asbestos fibres and such plastic fibres which establish a permanent porous structure of the web.
6. A packing according to claim 1 wherein said porous coating is a porous tubular knitting.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US406132A US3878031A (en) | 1973-10-12 | 1973-10-12 | Packing for movable machine parts |
AT742074A AT334701B (en) | 1973-10-12 | 1974-09-13 | PACKAGING FOR SEALING MOVABLE MACHINERY PARTS AND METHOD FOR MANUFACTURING SUCH PACKAGING |
GB4093774A GB1474976A (en) | 1973-10-12 | 1974-09-19 | Packing to be arranged between movable machine parts |
DE2444847A DE2444847C2 (en) | 1973-10-12 | 1974-09-19 | Packing for sealing moving machine parts |
CH1276974A CH618249A5 (en) | 1973-10-12 | 1974-09-20 | |
IT28168/74A IT1022693B (en) | 1973-10-12 | 1974-10-08 | GASKET FOR SEALING MOVABLE MACHINE PARTS WITH VISCOSE CORE AND POROUS COATING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US406132A US3878031A (en) | 1973-10-12 | 1973-10-12 | Packing for movable machine parts |
Publications (1)
Publication Number | Publication Date |
---|---|
US3878031A true US3878031A (en) | 1975-04-15 |
Family
ID=23606662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US406132A Expired - Lifetime US3878031A (en) | 1973-10-12 | 1973-10-12 | Packing for movable machine parts |
Country Status (6)
Country | Link |
---|---|
US (1) | US3878031A (en) |
AT (1) | AT334701B (en) |
CH (1) | CH618249A5 (en) |
DE (1) | DE2444847C2 (en) |
GB (1) | GB1474976A (en) |
IT (1) | IT1022693B (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4163825A (en) * | 1976-12-07 | 1979-08-07 | Chemiefaser Lenzing Aktiengesellschaft | Threads or fibers of polytetrafluorethylene |
US4331339A (en) * | 1980-11-21 | 1982-05-25 | Caterpillar Tractor Co. | Seal assembly having a plastic annular sealing member with an integral sealing lip |
US4596839A (en) * | 1981-09-16 | 1986-06-24 | Peters William E | Elastomer PTFE composition |
WO1987001309A1 (en) * | 1985-08-30 | 1987-03-12 | Peters William E | Elastomer ptfe composition, articles, and manufacturing methods |
DE3536235A1 (en) * | 1985-10-10 | 1987-04-16 | Chetra Industriebedarf Gmbh | Process for producing a packing |
WO1987003515A1 (en) * | 1985-12-09 | 1987-06-18 | Peters William E | Elastomer ptfe composition, articles, and manufacturing methods |
AU585533B2 (en) * | 1985-08-30 | 1989-06-22 | Alphaflex Industries Inc. | Molybdenum disulphide filled elastomer ptfe composition and automotive parts therefrom |
DE4237886A1 (en) * | 1992-09-11 | 1994-03-17 | Mtu Muenchen Gmbh | Device for sealing fluidically differently pressurized spaces between housings which can move relative to one another, in particular aircraft engines |
US5380015A (en) * | 1993-12-17 | 1995-01-10 | Federal-Mogul Corporation | Machined shaft seal encased in an elastomeric sleeve |
US5393819A (en) * | 1994-02-25 | 1995-02-28 | Alphaflex Industries | Asphalt modifier |
US5399598A (en) * | 1994-03-03 | 1995-03-21 | Alphaflex Industries | Asphalt composition |
US5418270A (en) * | 1994-04-12 | 1995-05-23 | Alphaflex Industries, Inc. | Modified thermoplastic elastomeric compositions |
EP0695899A1 (en) * | 1994-07-01 | 1996-02-07 | Itv -Institut Für Textil-Und Verfahrenstechnik | Stuffing-box packing |
US5492336A (en) * | 1993-04-20 | 1996-02-20 | W. L. Gore & Associates, Inc. | O-ring gasket material and method for making and using same |
US5494301A (en) * | 1993-04-20 | 1996-02-27 | W. L. Gore & Associates, Inc. | Wrapped composite gasket material |
US5551706A (en) * | 1993-04-20 | 1996-09-03 | W. L. Gore & Associates, Inc. | Composite gasket for sealing flanges and method for making and using same |
US5645603A (en) * | 1995-07-25 | 1997-07-08 | Peters; William E. | Method of enhancing physical properties of non-elastomeric thermoplastic materials and resulting compositions |
US6688607B2 (en) | 1997-04-18 | 2004-02-10 | Henkel Loctite Corporation | Material for sealing threaded pipe joints, and dispenser therefor |
CN102775957A (en) * | 2011-05-13 | 2012-11-14 | 李学辉 | Packing sealing filler and its preparation method |
CN103602311A (en) * | 2013-09-27 | 2014-02-26 | 马士民 | Recyclable flexible nanometer sealing filler |
CN103708098A (en) * | 2014-01-02 | 2014-04-09 | 李卿语 | Bottle cap sealing gasket |
US20140175759A1 (en) * | 2011-09-13 | 2014-06-26 | Nok Corporation | Gasket and sealing structure |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9215026U1 (en) * | 1992-11-04 | 1993-04-29 | Latty International S.A., Orsay | Sealing ring |
CN110939737A (en) * | 2019-12-05 | 2020-03-31 | 中国航发四川燃气涡轮研究院 | Expanded graphite sealing device with anti-shearing function |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2217915A (en) * | 1936-12-01 | 1940-10-15 | Firm Elite Diamantwerke Ag | Circular knitted web and method for its manufacture |
US2578523A (en) * | 1950-06-30 | 1951-12-11 | Du Pont | Polytetrafluoroethylene packing material and process for making same |
US2691814A (en) * | 1952-11-24 | 1954-10-19 | Glacier Co Ltd | Polytetrafluorethylene impregnated bearings |
US2767768A (en) * | 1952-08-01 | 1956-10-23 | Kellogg M W Co | Insulating compositions and method of forming same |
US3534652A (en) * | 1967-10-02 | 1970-10-20 | Marlo Co Inc | Braided high-temperature packing |
US3646846A (en) * | 1970-01-19 | 1972-03-07 | George E Houghton | Fibrous graphite packing |
US3791658A (en) * | 1971-05-07 | 1974-02-12 | Marlo Co Inc | Packings for pumps, valves, and the like |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2249981A (en) * | 1939-06-15 | 1941-07-22 | Chester M Roe | Packing for stuffing boxes and the like |
GB1194509A (en) * | 1967-12-07 | 1970-06-10 | Marlo Co Inc | Improvements in or relating to Packings for Pumps, Valves and the like |
-
1973
- 1973-10-12 US US406132A patent/US3878031A/en not_active Expired - Lifetime
-
1974
- 1974-09-13 AT AT742074A patent/AT334701B/en not_active IP Right Cessation
- 1974-09-19 GB GB4093774A patent/GB1474976A/en not_active Expired
- 1974-09-19 DE DE2444847A patent/DE2444847C2/en not_active Expired
- 1974-09-20 CH CH1276974A patent/CH618249A5/de not_active IP Right Cessation
- 1974-10-08 IT IT28168/74A patent/IT1022693B/en active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2217915A (en) * | 1936-12-01 | 1940-10-15 | Firm Elite Diamantwerke Ag | Circular knitted web and method for its manufacture |
US2578523A (en) * | 1950-06-30 | 1951-12-11 | Du Pont | Polytetrafluoroethylene packing material and process for making same |
US2767768A (en) * | 1952-08-01 | 1956-10-23 | Kellogg M W Co | Insulating compositions and method of forming same |
US2691814A (en) * | 1952-11-24 | 1954-10-19 | Glacier Co Ltd | Polytetrafluorethylene impregnated bearings |
US3534652A (en) * | 1967-10-02 | 1970-10-20 | Marlo Co Inc | Braided high-temperature packing |
US3646846A (en) * | 1970-01-19 | 1972-03-07 | George E Houghton | Fibrous graphite packing |
US3791658A (en) * | 1971-05-07 | 1974-02-12 | Marlo Co Inc | Packings for pumps, valves, and the like |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4163825A (en) * | 1976-12-07 | 1979-08-07 | Chemiefaser Lenzing Aktiengesellschaft | Threads or fibers of polytetrafluorethylene |
US4331339A (en) * | 1980-11-21 | 1982-05-25 | Caterpillar Tractor Co. | Seal assembly having a plastic annular sealing member with an integral sealing lip |
WO1982003670A1 (en) * | 1980-11-21 | 1982-10-28 | Harold L Reinsma | Seal assembly having a plastic annular sealing member with an integral sealing lip |
US4596839A (en) * | 1981-09-16 | 1986-06-24 | Peters William E | Elastomer PTFE composition |
WO1987001309A1 (en) * | 1985-08-30 | 1987-03-12 | Peters William E | Elastomer ptfe composition, articles, and manufacturing methods |
AU585533B2 (en) * | 1985-08-30 | 1989-06-22 | Alphaflex Industries Inc. | Molybdenum disulphide filled elastomer ptfe composition and automotive parts therefrom |
AT392136B (en) * | 1985-10-10 | 1991-01-25 | Chetra Gmbh Dichtungstechnik | METHOD FOR PRODUCING A CALIBRATED PACK |
DE3536235A1 (en) * | 1985-10-10 | 1987-04-16 | Chetra Industriebedarf Gmbh | Process for producing a packing |
WO1987003515A1 (en) * | 1985-12-09 | 1987-06-18 | Peters William E | Elastomer ptfe composition, articles, and manufacturing methods |
DE4237886A1 (en) * | 1992-09-11 | 1994-03-17 | Mtu Muenchen Gmbh | Device for sealing fluidically differently pressurized spaces between housings which can move relative to one another, in particular aircraft engines |
US5492336A (en) * | 1993-04-20 | 1996-02-20 | W. L. Gore & Associates, Inc. | O-ring gasket material and method for making and using same |
US5551706A (en) * | 1993-04-20 | 1996-09-03 | W. L. Gore & Associates, Inc. | Composite gasket for sealing flanges and method for making and using same |
US5494301A (en) * | 1993-04-20 | 1996-02-27 | W. L. Gore & Associates, Inc. | Wrapped composite gasket material |
US5380015A (en) * | 1993-12-17 | 1995-01-10 | Federal-Mogul Corporation | Machined shaft seal encased in an elastomeric sleeve |
US5393819A (en) * | 1994-02-25 | 1995-02-28 | Alphaflex Industries | Asphalt modifier |
US5399598A (en) * | 1994-03-03 | 1995-03-21 | Alphaflex Industries | Asphalt composition |
US5418270A (en) * | 1994-04-12 | 1995-05-23 | Alphaflex Industries, Inc. | Modified thermoplastic elastomeric compositions |
EP0695899A1 (en) * | 1994-07-01 | 1996-02-07 | Itv -Institut Für Textil-Und Verfahrenstechnik | Stuffing-box packing |
US5645603A (en) * | 1995-07-25 | 1997-07-08 | Peters; William E. | Method of enhancing physical properties of non-elastomeric thermoplastic materials and resulting compositions |
US6688607B2 (en) | 1997-04-18 | 2004-02-10 | Henkel Loctite Corporation | Material for sealing threaded pipe joints, and dispenser therefor |
US20040070154A1 (en) * | 1997-04-18 | 2004-04-15 | Loctite (R&D) Limited | Method for sealing threaded pipe joints |
US7168707B2 (en) | 1997-04-18 | 2007-01-30 | Loctite (R&D) Limited | Method for sealing threaded pipe joints |
CN102775957A (en) * | 2011-05-13 | 2012-11-14 | 李学辉 | Packing sealing filler and its preparation method |
US20140175759A1 (en) * | 2011-09-13 | 2014-06-26 | Nok Corporation | Gasket and sealing structure |
CN103602311A (en) * | 2013-09-27 | 2014-02-26 | 马士民 | Recyclable flexible nanometer sealing filler |
CN103708098A (en) * | 2014-01-02 | 2014-04-09 | 李卿语 | Bottle cap sealing gasket |
Also Published As
Publication number | Publication date |
---|---|
IT1022693B (en) | 1978-04-20 |
CH618249A5 (en) | 1980-07-15 |
AT334701B (en) | 1976-02-10 |
GB1474976A (en) | 1977-05-25 |
ATA742074A (en) | 1976-05-15 |
DE2444847A1 (en) | 1975-04-17 |
DE2444847C2 (en) | 1982-12-30 |
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