A seal assembly for a pipeline plug may include a pressure head including a forcing face. The seal assembly may include a primary tapered ring including an expansion face. The expansion face may abut the forcing face. The seal assembly may include primary seal ring. The seal assembly may include a squeezer assembly, the squeezer assembly including at least one seal face, the seal face abutting the primary seal ring. The seal assembly may include a secondary tapered ring, the secondary tapered ring including a wedge squeezer face, the wedge squeezer face abutting a wedge face of the squeezer assembly. The seal assembly may include a bowl, the bowl including a wedge face, the wedge face in abutment with an expansion face of the secondary tapered ring.

A cap (20) for a header box of a heat exchanger (1), in particular for a motor vehicle, in particular a radiator, is disclosed. This cap includes a head (21), a shank (22) comprising at least one mounting thread (23), this shank being between the head and a free end of the cap, a retaining lug (30), in particular elastically deformable, arranged to retain the cap in an opening (10) of the header box in an intermediate position of the cap, in which position the cap leaves a clear passage while being retained in the opening, this retaining lug being formed on the shank.

A plug can include a body defining a top body end and a bottom body end, the body defining an outer surface extending between the top body end and the bottom body end and a plug recess extending into the body from the outer surface; and a locking mechanism including a locking bar, the locking bar rotationally fixed relative to the body, the locking mechanism reconfigurable between a locked configuration and an unlocked configuration, the locking bar positioned at least partially within the plug recess, at least a portion of the locking bar extending outward from the plug recess in the locked configuration.

A locking security lid incorporates a cylindrical housing having extendable pistons and contact pads for contacting the interior surface of an access pipe, the contact pads may be retracted to a withdrawn position wherein the contact pads are within the outside diameter of the cylindrical housing. The cylindrical housing is provided with a locking bolt to will be secured to the cylindrical housing through a stanchion and having a keyed bolt head to prevent removal of the locking bolt without a socket wrench having a corresponding slot pattern. The contact pads are provided with a locking interference surface to prevent relative movement between an access pipe and the contact pad when the contact pads are extended.

Disclosed is a system comprising a fitting with a bore and a fitting recess. A plug comprising a body can be positioned within the bore, defining a plug recess. A locking mechanism can comprise a locking bar. The locking bar can engage both the fitting recess and/or the plug recess in a locked configuration, and only one of the recesses in an unlocked configuration. The locking bar can translate relative to the body to switch between the locked and unlocked configurations. The system provides a secure and efficient locking mechanism for connecting the fitting and plug components and can permit reconfiguration between the locked and unlocked configurations.

Disclosed is a method for sealing a bore of a fitting using a plug. The method can involve inserting the plug into the bore of the fitting, where the fitting comprises a fitting recess and the plug comprises a plug recess. A locking mechanism can be employed by translating a locking bar to engage with both the fitting recess and/or the plug recess, thereby securing the plug within the bore. The method can provide an efficient and reliable way to seal the bore of a fitting, and may ensure a tight and secure fit between the plug and the fitting for various applications.

The present invention relates to a sealing device designed for sealing a fuel inlet opening of an aircraft engine and to an aircraft engine provided with such a sealing device. The invention further relates to a method for sealing a fuel inlet opening of an aircraft engine.