A gasket capable of sealing against multiple sealing surfaces, comprising an inner seal ring for sealing against inner sealing surfaces, an outer seal ring for sealing against outer sealing surfaces, one or more intermediate seal rings for sealing against one or more intermediate sealing surfaces, and a connector member for connecting the inner seal ring, one or more intermediate seal rings and the outer seal ring. In some embodiments, the gasket includes a retaining feature for securing the gasket in place and a removal feature for removing the gasket. In some embodiments, the various components of the gasket (e.g., seal rings, connector members, retaining feature, etc.) are composed of different materials (e.g., metal, metal alloy, plastic, rubber, ceramic and/or glass).

An annular seal element which includes a cylindrical seal body: first and second axially spaced sealing lips which are located on the seal body and are directed generally radially outwardly: first and second spaced-apart sealing flanges which extend radially outwardly from the seal body: and third and fourth sealing lips which are located on the first and second sealing flanges, respectively.

Example aspects of a tight-seal piping component, a tight-seal piping assembly, and a method for preventing leaking in a piping assembly are disclosed. The tight-seal piping component can comprise a fitting body defining a fitting inner surface, a fitting outer surface opposite the fitting inner surface, a first fitting end, and a second fitting end opposite the first fitting end, the fitting inner surface defining: an interior channel defining a fitting axis; a seal stop surface within the interior channel; and internal threading between first fitting end and the seal stop surface, the internal threading defining straight threading extending in a direction about perpendicular to the fitting axis; and a seal received within interior channel and abutting seal stop surface.

A gasket capable of sealing against multiple sealing surfaces, comprising an inner seal ring for sealing against inner sealing surfaces, an outer seal ring for sealing against outer sealing surfaces, one or more intermediate seal rings for sealing against one or more intermediate sealing surfaces, and a connector member for connecting the inner seal ring, one or more intermediate seal rings and the outer seal ring. In some embodiments, the gasket includes a retaining feature for securing the gasket in place and a removal feature for removing the gasket. In some embodiments, the various components of the gasket (e.g., seal rings, connector members, retaining feature, etc.) are composed of different materials (e.g., metal, metal alloy, plastic, rubber, ceramic and/or glass).

A gasket capable of sealing against multiple sealing surfaces, comprising an inner seal ring for sealing against inner sealing surfaces, an outer seal ring for sealing against outer sealing surfaces, one or more intermediate seal rings for sealing against one or more intermediate sealing surfaces, and a connector member for connecting the inner seal ring, one or more intermediate seal rings and the outer seal ring. In some embodiments, the gasket includes a retaining feature for securing the gasket in place and a removal feature for removing the gasket. In some embodiments, the various components of the gasket (e.g., seal rings, connector members, retaining feature, etc.) are composed of different materials (e.g., metal, metal alloy, plastic, rubber, ceramic and/or glass).

A gasket for use between adjoining pipe flanges includes a retainer which defines a bore and includes a first face and an opposite second face. The retainer is constructed and arranged with a first groove in the first face and with a second groove in the second face, the first groove includes a first form for seal retention and the first seal element includes a first cooperating form for retention of the seal element within the first groove. A second seal element is received within the second groove and the retention of each seal element within its respective groove is accomplished without the use of a bonding material.

A gasket for use between adjoining pipe flanges includes a retainer which defines a bore and includes a first face and an opposite second face. The retainer is constructed and arranged with a first groove in the first face and with a second groove in the second face, the first groove includes a first form for seal retention and the first seal element includes a first cooperating form for retention of the seal element within the first groove. A second seal element is received within the second groove and the retention of each seal element within its respective groove is accomplished without the use of a bonding material.

The present disclosure relates to a seal for a coupling member of a type used in a fluid coupling including mating first and second coupling members. Each coupling member includes a seal cavity with a generally square shaped cross-section including an upper face, a circumferential face and a lower face. The seal includes an upper portion and a lower portion. The lower portion of the seal includes a first part and a second part. The first part of the lower portion of the seal includes an external ledge that extends away from the upper portion of the seal and which is configured during use of the coupling member to contact against the upper face of the seal cavity.

An adjustable joint having an outer housing section and an inner housing section telescopically disposed within the outer housing section. The inner housing section has an exterior portion within the outer housing section and which defines a circumferentially extending shoulder. An annular seal is positioned on the shoulder to create a seal between the outer housing section and the inner housing section. A circumferentially extending heat insulating spacer is attached to the shoulder and abuts the seal to retain the seal in place. A circumferentially extending heat shield is rigidly connected to the shoulder and abuts the heat insulating spacer and is located such that the heat insulating spacer is positioned between the heat shield and the annular seal. A circumferentially extending retainer ring is connected to the shoulder and abuts the heat shield to retain the heat shield, heat insulating spacer and annular seal in place so that when outer housing section and inner housing section move axially or rotate with respect to each other, the sealing function of the annular, metallic seal is maintained.

An adjustable joint having an outer housing section and an inner housing section telescopically disposed within the outer housing section. The inner housing section has an exterior portion within the outer housing section and which defines a circumferentially extending shoulder. An annular seal is positioned on the shoulder to create a seal between the outer housing section and the inner housing section. A circumferentially extending heat insulating spacer is attached to the shoulder and abuts the seal to retain the seal in place. A circumferentially extending heat shield is rigidly connected to the shoulder and abuts the heat insulating spacer and is located such that the heat insulating spacer is positioned between the heat shield and the annular seal. A circumferentially extending retainer ring is connected to the shoulder and abuts the heat shield to retain the heat shield, heat insulating spacer and annular seal in place so that when outer housing section and inner housing section move axially or rotate with respect to each other, the sealing function of the annular, metallic seal is maintained.