A modular pyrophoric lighter includes an outer case, an insert removably received by the outer case, and a renewal module removably received by the insert. The renewal module quickly slides into the insert to provide a new fuel supply, wick, and flint. The renewal module quickly slides out of the insert when the fuel, wick, and/or flint is spent so that a new renewal module may be installed. In an alternative embodiment, a modular lighter includes an outer case, an insert removably received by the outer case, and a fuel module removably received by the insert. The fuel module quickly slides into the insert to provide a new fuel supply. The fuel module quickly slides out of the insert when the fuel is spent so that a new fuel module may be installed.

A modular pyrophoric lighter includes an outer case, an insert removably received by the outer case, and a renewal module removably received by the insert. The renewal module quickly slides into the insert to provide a new fuel supply, wick, and flint. The renewal module quickly slides out of the insert when the fuel, wick, and/or flint is spent so that a new renewal module may be installed. In an alternative embodiment, a modular lighter includes an outer case, an insert removably received by the outer case, and a fuel module removably received by the insert. The fuel module quickly slides into the insert to provide a new fuel supply. The fuel module quickly slides out of the insert when the fuel is spent so that a new fuel module may be installed.

A sealing assembly, for filling and sealing a reservoir of a gas lighter that includes a cylindrical well, a plug having a front section and a rear section, the front section having radial projections and at least one recess to provide a fluid passage, the rear section having a circular bulge/bump portion, and a weld portion adapted to be melted by welding, wherein the plug is adapted to be moved from a first position (P1) in which a gas passage is, to a second position (P2), temporary seal position, in which a gastight contact is provided between the circular bulge portion of the plug and an inner wall of the well, and further from the second position to a third axial position (P3), definitive seal position, wherein the weld portion of the plug is definitely welded to the reservoir in a gastight manner.

A sealing assembly, for filling and sealing a reservoir of a gas lighter that includes a cylindrical well, a plug having a front section and a rear section, the front section having radial projections and at least one recess to provide a fluid passage, the rear section having a circular bulge/bump portion, and a weld portion adapted to be melted by welding, wherein the plug is adapted to be moved from a first position (P1) in which a gas passage is, to a second position (P2), temporary seal position, in which a gastight contact is provided between the circular bulge portion of the plug and an inner wall of the well, and further from the second position to a third axial position (P3), definitive seal position, wherein the weld portion of the plug is definitely welded to the reservoir in a gastight manner.