A flanged fitting includes an annular fitting flange having an annular end face. A glass liner lines a radially inner annular portion of the annular end face of the annular fitting flange. A radially outer annular portion of the annular end face of the annular fitting flange is free from the glass liner. The radially inner annular portion and the radially outer annular portion of the annular end face of the annular fitting flange define an annular gasket abutment face configured to seat a gasket thereon. An annular gasket includes an annular gasket layer. The annular gasket layer includes a radially inner annular gasket segment including a first material suitable for forming a liquid-tight seal with an opposing flange. A radially outer annular gasket segment surrounds the radially inner annular gasket segment. The radially outer annular gasket segment is fire-rated for forming a fire-rated seal with the opposing flange.

A seal including a first portion having a first width that extends in a radial direction of the seal, a second portion that is joined with the first portion and having a second width that is smaller than the first width, and a first recess that is located in the first portion to reduce a width expansion of the first portion when the seal is compressed in an axial direction of the seal.

Method and assembly of a pair of pipe flanges, a sealing ring and tensioners for sealing between the pair of flanges. At least one flange face has a circular groove to at least partly receive a sealing ring which has its ring wall rectilinear as seen in a cross-section when front faces of the pipe flanges are spaced apart. The ring fits at least partly into the flange groove. The ring in side view exhibits a truncated cone shape. The pipe flanges are attached to each other such that the flanges in operative state are forcibly held in abutting and facial engagement, and that upon tensioning of the tensionersto create said operative state, compressive forces act onto the sealing ring to yield that its wall, viewed in cross-section, is bent radially to exhibit a curved configuration. The groove may in an embodiment exhibit an isosceles trapezoid cross-section.

Method and assembly of a pair of pipe flanges, a sealing ring and tensioners for sealing between the pair of flanges. At least one flange face has a circular groove to at least partly receive a sealing ring which has its ring wall rectilinear as seen in a cross-section when front faces of the pipe flanges are spaced apart. The ring fits at least partly into the flange groove. The ring in side view exhibits a truncated cone shape. The pipe flanges are attached to each other such that the flanges in operative state are forcibly held in abutting and facial engagement, and that upon tensioning of the tensionersto create said operative state, compressive forces act onto the sealing ring to yield that its wall, viewed in cross-section, is bent radially to exhibit a curved configuration. The groove may in an embodiment exhibit an isosceles trapezoid cross-section.

Provided is a gasket being interposed between the flanges which are the connecting portions of the pipes. The gasket includes: a first jacket; a kammprofile provided in the first jacket; an O-ring member provided at the inner side of the kammprofile; and a second jacket encasing a portion of the first jacket, the kammprofile, and the O-ring member. A method of manufacturing the gasket is provided.

Provided is a gasket being interposed between the flanges which are the connecting portions of the pipes. The gasket includes: a first jacket; a kammprofile provided in the first jacket; an O-ring member provided at the inner side of the kammprofile; and a second jacket encasing a portion of the first jacket, the kammprofile, and the O-ring member. A method of manufacturing the gasket is provided.

A first duct segment may include a first flange including a first planar mating face and a first recess. A second duct segment may include a second flange including a second planar mating face and a second recess. The first duct segment and the second duct segment may be installed in a gas turbine engine. A first E-seal may be inserted in the first recess, and a second E-seal may be inserted in the second recess. A gap may be measured between the first flange and the second flange. A flat shim may be selected based on the size of the gap. The flat shim may be inserted between the first flange and the second flange. A plurality of bolts may be inserted through the first flange, the flat shim, and the second flange to seal the first duct segment to the second duct segment.

A first duct segment may include a first flange including a first planar mating face and a first recess. A second duct segment may include a second flange including a second planar mating face and a second recess. The first duct segment and the second duct segment may be installed in a gas turbine engine. A first E-seal may be inserted in the first recess, and a second E-seal may be inserted in the second recess. A gap may be measured between the first flange and the second flange. A flat shim may be selected based on the size of the gap. The flat shim may be inserted between the first flange and the second flange. A plurality of bolts may be inserted through the first flange, the flat shim, and the second flange to seal the first duct segment to the second duct segment.

The techniques introduced here include a system and method for efficiently connecting two or more pipes through the combination of a pushing plate, a gasket and a sealing plate. Such techniques exploit the presence of concentric protuberances, or rings, on the sealing plate that help, also thanks to the space between them, in keeping the cleanness, tightness and flexibility of the conjunction, especially when sticky substances, like a sludge, are dealt with.

The techniques introduced here include a system and method for efficiently connecting two or more pipes through the combination of a pushing plate, a gasket and a sealing plate. Such techniques exploit the presence of concentric protuberances, or rings, on the sealing plate that help, also thanks to the space between them, in keeping the cleanness, tightness and flexibility of the conjunction, especially when sticky substances, like a sludge, are dealt with.