ClassID:

153019

F16L23/20 - CPC Classification

Classification description:

Flanged joints characterised by the sealing means the sealing means being rings made exclusively of metal

Recent Application in this class:
#1
20250316728
2025-10-09

PLASTIC DUCTS WITH SLIP-ON STEEL FLANGE FOR THERMAL INTERFACES

#2
20250290630
2025-09-18

JOINT SEAL SYSTEM & METHOD

#3
20250216073
2025-07-03

Joint Seal System & Method

#4
20250043893
2025-02-06

RING SEAL WITH TROUGH

#5
20240392726
2024-11-28

Double seal arrangement

#6
20240288163
2024-08-29

Joint Seal System & Method

#7
20240110651
2024-04-04

Method of Connecting Tubular Members in Offshore Structures

#8
20230250905
2023-08-10

PIPE FLANGE CONNECTION SYSTEM WITH STATIC SEAL

#9
20230194084
2023-06-22

Joint seal system and method

#10
20230070737
2023-03-09

Manifold assembly for delivery of fracture fluid

#11
20230043216
2023-02-09

Seal ring and conduit connector

#12
20220282812
2022-09-08

Highly elastic metal seal

#13
20220178537
2022-06-09

Joint Seal System & Method

#14
20220154859
2022-05-19

Self-sealing a flange

#15
20220090713
2022-03-24

Flanged joint and method of fluidly connecting two components

#16
20220057029
2022-02-24

Metal seal comprising a textured outer sealing layer

#17
20220010900
2022-01-13

Connector for pipelines and method to connect the connector to a pipeline

#18
20210388923
2021-12-16

Sealing device for flanges

#19
20210239246
2021-08-05

Flange connection set

#20
20210239245
2021-08-05

Clamp

#21
20210148468
2021-05-20

Dual barrier seal

#22
20210079774
2021-03-18

Manifold assembly for delivery of fracture fluid

#23
20200378533
2020-12-03

Slip sealing structure

#24
20200166136
2020-05-28

Metal-to-metal sealing system with low component spreading requirements

#25
20200141525
2020-05-07

Clamping collar with foldable retaining finger tabs

#26
20200124176
2020-04-23

Apparatus and method for decreasing flow noise in ring-type joints

#27
20200040998
2020-02-06

Flange gasket

#28
20200025098
2020-01-23

Bolted duct joints

#29
20190383125
2019-12-19

Manifold assembly for delivery of fracture fluid

#30
20190360590
2019-11-28

Mounting device for a flat seal of a flange connection

#31
20190301609
2019-10-03

GASKET

#32
20190293178
2019-09-26

Seal structure, sealing method, and coupling equipped with said seal structure

#33
20190170350
2019-06-06

Joint seal system and method

#34
20190162339
2019-05-30

Metal seal and fluid control apparatus

#35
20190003622
2019-01-03

Method and a device for sealing between attachable pair of pipe flanges

#36
20180266560
2018-09-20

High performance titanium connecting sealing ring for deep-sea oil drilling and production device and processing method

#37
20180231158
2018-08-16

Gasket with multiple seal rings

#38
20180142817
2018-05-24

Mechanical seal assembly

#39
20180135755
2018-05-17

Mechanical seal assembly

#40
20180112806
2018-04-26

Pipe coupling

#41
20180094755
2018-04-05

Clamping system with controlled angular positioning for connecting together two tubes

#42
20180045347
2018-02-15

Gasket for use in sealing flanges together

#43
20180023732
2018-01-25

CONNECTION OF REDUCED OVERALL DIMENSIONS BETWEEN AN ALUMINUM TUBE AND A HEAT EXCHANGER

#44
20170370470
2017-12-28

FLUID CONVEYANCE SYSTEM GASKET ASSEMBLY AND METHODS OF ASSEMBLING THE SAME

#45
20170336003
2017-11-23

Metal-to-metal well equipment seal

#46
20170314715
2017-11-02

DISSIMILAR PIPING JOINT AT HIGH TEMPERATURE, HIGH PRESSURE TRANSIENT AND UNDER CYCLIC LOADING

#47
20170314713
2017-11-02

Assembly component for a vacuum chamber and method for producing the assembly component

#48
20170284578
2017-10-05

System for coupling two tubes

#49
20170276249
2017-09-28

FLANGE GASKET

#50
20170130881
2017-05-11

Sealing rings and sealing ring assemblies for high temperature end applications

#51
20170074437
2017-03-16

Sealing device for flanges

#52
20170009918
2017-01-12

GASKET WITH COMPRESSION AND ROTATION CONTROL

#53
20160377179
2016-12-29

Gasket and the manufacturing method thereof

#54
20160348817
2016-12-01

Double-rail serrated metal gasket

#55
20160312935
2016-10-27

Pipe coupling structure

#56
20160290537
2016-10-06

Vacuum sealing flange

#57
20160265663
2016-09-15

Gasket and the manufacturing method thereof

#58
20160265662
2016-09-15

Gasket and the manufacturing method thereof

#59
20160258560
2016-09-08

JOINT FOR HIGH-PRESSURE PIPES AND JOINT STRUCTURE

#60
20160223111
2016-08-04

Metallic flange connection gasket

#61
20160138739
2016-05-19

SEAL RING STRUCTURE FOR HIGH-PRESSURE PIPE JOINT

#62
20160138718
2016-05-19

Gasket

#63
20160040810
2016-02-11

Bleed system bolted duct with recessed seals

#64
20160003385
2016-01-07

GASKET WITH COMPRESSION AND ROTATION CONTROL

#65
20150330509
2015-11-19

Gasket

#66
20150292623
2015-10-15

Low-cost high-performance annular metallic seal for high pressures and large diameters

#67
20150252923
2015-09-10

Fluid coupling and retainer for fluid coupling

#68
20150159755
2015-06-11

JACKETED RESILIENT METAL SEAL

#69
20150091258
2015-04-02

Metal seal for ultra high vacuum system

#70
20140361493
2014-12-11

Sealing device

#71
20140265325
2014-09-18

Wave washer, method of manufacture, method of use, and pipe joint using same

#72
20140217681
2014-08-07

EZ-seal gasket for joining fluid pathways

#73
20140203551
2014-07-24

Hybrid redundant seal for refrigerant systems

#74
20140110937
2014-04-24

Pipe joint

#75
20130334772
2013-12-19

Seal

#76
20130264778
2013-10-10

Ring seal retainer assembly and methods

#77
20130257044
2013-10-03

Metal seal for ultra high vacuum system

#78
20130097815
2013-04-25

Profiled clamp with sealing element

#79
20120286480
2012-11-15

Negative creep corrugated gasket and methods of manufacturing same

#80
20120193874
2012-08-02

Blowout preventer seal and method of using same

#81
20120161398
2012-06-28

System and method of a flange seal ring

#82
20120139235
2012-06-07

Metal seal ring

#83
20120139190
2012-06-07

RING SEAL RETAINER ASSEMBLY AND METHODS

#84
20120007358
2012-01-12

Gasket Retention System for Flange Coupling

#85
20110316239
2011-12-29

Assembly having a dual barrier gasket

#86
20110315905
2011-12-29

Gasket type orifice and pressure type flow rate control apparatus for which the orifice is employed

#87
20110266797
2011-11-03

Seal ring and joint

#88
20110253667
2011-10-20

Expansion seal, especially for gases

#89
20110121515
2011-05-26

Minimal thickness, double-sided flange for insertion between two ultra-high vacuum flanges

#90
20110084456
2011-04-14

Metal gasket

#91
20110057394
2011-03-10

SEAL

#92
20110031745
2011-02-10

Fluid coupling and retainer for fluid coupling

#93
20100327578
2010-12-30

Coupling structure for absorption refrigeration circuit

#94
20100259016
2010-10-14

Resilient seal

#95
20100230960
2010-09-16

GENDERLESS FLANGE FOR HIGH VACUUM WAVEGUIDES

#96
20100181734
2010-07-22

Metal seals for weld-deformed high temperature pneumatic ducting joints

#97
20100032945
2010-02-11

APPARATUS FOR CONNECTING TUBULAR BODIES

#98
20090322039
2009-12-31

Sealing system for exhaust-gas lines

#99
20090284008
2009-11-19

SEALING SYSTEM FOR EXHAUST-GAS LINES

#100
20090273143
2009-11-05

GASKET

#101
20090224488
2009-09-10

System and method of a flange seal ring

#102
20090015010
2009-01-15

Method of making a fluid coupling

#103
20080290658
2008-11-27

Fitting structure including a pair of connection pipes and a clamp ring

#104
20080267731
2008-10-30

Bolted flanged connection on a basis of shape memory effect and inverse flexion flange design

#105
20080224422
2008-09-18

Resilient Seal

#106
20080199273
2008-08-21

Method to limit a creep of bolts and gaskets of bolted flanged connections

#107
20080143059
2008-06-19

Dynamic flange seal and sealing system

#108
20080073857
2008-03-27

Sealing system

#109
20070267868
2007-11-22

Flanged joint

#110
20070252337
2007-11-01

Dynamic flange seal and sealing system

#111
20070125515
2007-06-07

Vacuum housing

#112
20070040337
2007-02-22

Sealing structure for the mouth of a high vacuum knife

#113
20070001404
2007-01-04

O-ring and clamp-type joint for vacuum apparatus

#114
20060207545
2006-09-21

Structural component, a shielding component in particular

#115
20060145428
2006-07-06

Gasket ring with sharp peaks

#116
20060082154
2006-04-20

Connection of two pipes and sealing ring for the connection

#117
20060055122
2006-03-16

Fluid coupling and method of designing the same

#118
20050244245
2005-11-03

Method and devices to limit a creep of mechanical fasteners

#119
20050242530
2005-11-03

Metal seal and attachment method for the same and tight-seal construction

#120
20050035557
2005-02-17

Minimal thickness, double-sided flanges for ultra-high vacuum components

#121
20050017510
2005-01-27

Clamping system for the sealed connection of two tubes having support surfaces

#122
15636598
2020-09-15

Flowline component with rotatable flange on retainer segments

#123
14973407
2020-07-07

External pressure CX gasket

#124
13856054
2015-12-29

Seal for use in subsea connections and subsea connections employing such a seal