A production method for a hermetically-sealed package, comprising the steps of: providing a hermetic-sealing package member, wherein: the hermetic-sealing package member comprises a first substrate and at least one frame-like sealing material for defining a sealing region formed on the first substrate; the sealing material is formed of a sintered body obtained by sintering of at least one metal powder selected from gold, silver, palladium, or platinum having a purity of 99.9 wt% or greater and an average particle size of 0.005 μm to 1.0 μm; and the sealing material is formed such that a shape of an arbitrary cross-section toward an outside from the sealing region includes a base portion having a certain height and at least one ridge portion protruding from the base portion, the ridge portion having an apex; and overlapping the first substrate and a second substrate and bonding the first and second substrates to each other through the sealing material; and densifying the sealing material by heating at 80 to 300oC and pressing in one direction or both directions, the step of densifying further comprising: the second substrate is pressed against the apex of the ridge portion such that metal powders immediately below the second substrate deform, thereby forming a recrystallized region, which expands to form a pillar recrystallized region that is more dense than the surrounding metal powder of the sintered body. providing a hermetic-sealing package member, wherein: the hermetic-sealing package member comprises a first substrate and at least one frame-like sealing material for defining a sealing region formed on the first substrate; the sealing material is formed of a sintered body obtained by sintering of at least one metal powder selected from gold, silver, palladium, or platinum having a purity of 99.9 wt% or greater and an average particle size of 0.005 μm to 1.0 μm; and the sealing material is formed such that a shape of an arbitrary cross-section toward an outside from the sealing region includes a base portion having a certain height and at least one ridge portion protruding from the base portion, the ridge portion having an apex; and the hermetic-sealing package member comprises a first substrate and at least one frame-like sealing material for defining a sealing region formed on the first substrate; the sealing material is formed of a sintered body obtained by sintering of at least one metal powder selected from gold, silver, palladium, or platinum having a purity of 99.9 wt% or greater and an average particle size of 0.005 μm to 1.0 μm; and the sealing material is formed such that a shape of an arbitrary cross-section toward an outside from the sealing region includes a base portion having a certain height and at least one ridge portion protruding from the base portion, the ridge portion having an apex; and overlapping the first substrate and a second substrate and bonding the first and second substrates to each other through the sealing material; and densifying the sealing material by heating at 80 to 300oC and pressing in one direction or both directions, the step of densifying further comprising: the second substrate is pressed against the apex of the ridge portion such that metal powders immediately below the second substrate deform, thereby forming a recrystallized region, which expands to form a pillar recrystallized region that is more dense than the surrounding metal powder of the sintered body.